/* ==========================================================================
   Modern Özgüven Yurdu Website CSS
   ========================================================================== */

/* ==========================================================================
   1. Custom Properties (CSS Variables)
   ========================================================================== */
:root {
    --primary-color: #00adb5;
    --primary-dark: #008a91;
    --primary-light: #33bdc3;
    --secondary-color: #393e46;
    --secondary-dark: #2c3038;
    --success-color: #28a745;
    --light-bg: #f8f9fa;
    --dark-text: #222831;
    --light-text: #ffffff;
    --border-radius: 15px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    
    /* PROFESSIONAL VARIABLES */
    --primary-blue: #1e3a8a;
    --secondary-blue: #3b82f6;
    --accent-blue: #0ea5e9;
    --dark-blue: #1e40af;
    --light-blue: #dbeafe;
    --gradient-professional: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    --gradient-subtle: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    --shadow-professional: 0 10px 25px rgba(30, 58, 138, 0.15);
    --shadow-subtle: 0 4px 12px rgba(0,0,0,0.1);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --text-shadow-subtle: 1px 1px 2px rgba(0,0,0,0.1);
    --backdrop-blur: blur(8px);
    
    /* Room Calculation Styles */
    --room-card-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --room-card-shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.15);
    --room-card-border-radius: 12px;
    --room-card-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   2. Base Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: var(--dark-text);
    overflow-x: hidden;
    background-color: #ffffff;
    position: relative;
    width: 100%;
    max-width: 100vw;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    transition: var(--transition);
}

/* ==========================================================================
   3. Navigation Styles
   ========================================================================== */
.navbar {
    padding: 1rem 0;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.98) !important;
    box-shadow: var(--shadow-md);
}

.logo-img {
    height: 70px;
    width: auto;
    transition: var(--transition);
}

.nav-link {
    font-weight: 600;
    color: var(--dark-text) !important;
    padding: 0.5rem 1rem !important;
    margin: 0 0.2rem;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
  height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transform: translateX(-50%);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

.btn-call {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 25px;
    color: white;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.btn-call:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    animation: fadeInDown 0.3s ease;
}

.dropdown-item {
    border-radius: 8px;
    padding: 0.6rem 1rem;
    transition: var(--transition);
    font-weight: 500;
}

.dropdown-item:hover {
    background: linear-gradient(90deg, var(--primary-light), var(--primary-color));
    color: white;
    transform: translateX(5px);
}

.dropdown-item i {
    width: 20px;
    margin-right: 8px;
}

.phone-numbers-mobile .btn {
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
}

.home-btn-mobile {
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
    font-weight: 600;
    white-space: nowrap;
    border-width: 2px;
    transition: all 0.3s ease;
}

.home-btn-mobile:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.home-btn-mobile i {
    font-size: 1rem;
}

/* ==========================================================================
   4. Hero Section
   ========================================================================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%),
                url('../img/header.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 100px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
                rgba(255, 255, 255, 0.75) 0%, 
                rgba(255, 255, 255, 0.85) 100%);
    z-index: 1;
}

/* Tüm cihazlar için yazıları siyah yap */
.hero-section h1 {
    color: #000000 !important;
    text-shadow: none;
}

.hero-section h1 span {
    color: #000000 !important;
}

.hero-section .lead {
    color: #000000 !important;
    text-shadow: none;
}

.hero-section p {
    color: #000000 !important;
    text-shadow: none;
}

.hero-section p strong {
    color: #000000 !important;
}

.hero-section strong {
    color: #000000 !important;
}

.hero-section .btn {
    color: #000000 !important;
}

.hero-section .btn i {
    color: #000000 !important;
}

/* Span sınıflarını da siyah yap */
.professional-gradient,
.accent-text,
.professional-text,
.typing-text {
    color: #000000 !important;
}

.hero-content {
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease;
}

.hero-section h1 {
    font-weight: 900;
    text-shadow: none;
    line-height: 1.2;
    color: var(--primary-color);
}

.hero-section .lead {
    text-shadow: none;
    color: var(--dark-text);
    font-weight: 500;
}

.hero-buttons .btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.hero-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.hero-buttons .btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border: none;
}

.hero-buttons .btn-success {
    background: linear-gradient(135deg, #25D366, #128C7E);
    border: none;
}

.branch-info {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
  padding: 2rem;
    border-radius: var(--border-radius);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.branch-info h4 {
    font-weight: 700;
    text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.2);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.scroll-indicator a {
    color: white;
    font-size: 2rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-20px); }
    60% { transform: translateY(-10px); }
}

/* ==========================================================================
   5. Announcement Section
   ========================================================================== */
.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
}

.announcement-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.announcement-content p {
    border-left: 4px solid white;
    padding-left: 1rem;
}

/* ==========================================================================
   6. Features Section
   ========================================================================== */
.feature-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid #f0f0f0;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.feature-icon {
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card h5 {
    color: var(--secondary-color);
    margin-top: 1rem;
}

/* ==========================================================================
   7. University Cards
   ========================================================================== */
.university-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.university-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(90deg, #f8f9fa, white);
}

.university-name {
    font-weight: 600;
    color: var(--dark-text);
}

/* ==========================================================================
   8. References Section
   ========================================================================== */
.reference-item {
    padding: 1rem;
    transition: var(--transition);
}

.reference-item img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.reference-item:hover img {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* ==========================================================================
   9. Contact Section
   ========================================================================== */
.contact-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-top: 4px solid var(--primary-color);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    transition: var(--transition);
}

.contact-card:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
}

.contact-card a {
    transition: var(--transition);
}

.contact-card a:hover {
    color: var(--primary-color) !important;
}

/* ==========================================================================
   10. Gallery Section
   ========================================================================== */
.gallery-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.gallery-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.gallery-card img {
    transition: var(--transition);
}

.gallery-card:hover img {
    transform: scale(1.1);
}

.gallery-card-body {
    padding: 1rem;
}

/* ==========================================================================
   11. Footer
   ========================================================================== */
footer {
    background: linear-gradient(135deg, var(--secondary-dark), var(--secondary-color));
}

.social-link {
    transition: var(--transition);
    display: inline-block;
}

.social-link:hover {
    transform: translateY(-3px) rotate(5deg);
    color: var(--primary-color) !important;
}

/* ==========================================================================
   12. Floating Button
   ========================================================================== */
.floating-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: 50%;
  display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.floating-btn:hover {
    transform: scale(1.1);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: white;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0, 173, 181, 0.7); }
    50% { box-shadow: 0 0 0 15px rgba(0, 173, 181, 0); }
}

/* ==========================================================================
   13. Utility Classes
   ========================================================================== */
.title-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: 2px;
}

.text-primary {
    color: var(--primary-color) !important;
}

.text-secondary {
    color: var(--secondary-color) !important;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light)) !important;
}

/* ==========================================================================
   14. Animations
   ========================================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ==========================================================================
   15. Responsive Design
   ========================================================================== */
@media (max-width: 991px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .logo-img {
        height: 60px;
    }
    
    .floating-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 767px) {
    /* Performance Optimization */
    * {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
        -webkit-backface-visibility: hidden;
        backface-visibility: hidden;
        -webkit-perspective: 1000;
        perspective: 1000;
    }
    
    /* Global Mobile Fix */
    * {
        max-width: 100%;
    }
    
html {
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
}
    
body {
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
    }
    
    /* Ağır animasyonları kapat */
    .installment-banner,
    .discount-banner,
    .price-badge,
    .room-card-inner {
        animation: none !important;
    }
    
    .installment-banner::before,
    .discount-banner::before,
    .price-badge::after,
    .room-card-inner::before {
        animation: none !important;
    }
    
    /* AOS animasyonları mobilede devre dışı */
    [data-aos] {
        pointer-events: auto !important;
    }
    
    .container {
        padding-left: 15px;
        padding-right: 15px;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .row {
        margin-left: -10px;
        margin-right: -10px;
    }
    
    .row > * {
        padding-left: 10px;
        padding-right: 10px;
    }
    
    /* Navbar Mobile Fix */
    .navbar {
        padding: 0.5rem 0;
        background-color: rgba(255, 255, 255, 0.98) !important;
        box-shadow: var(--shadow-md);
        position: fixed;
        top: 0;
        width: 100%;
        z-index: 1030;
    }
    
    .navbar .container {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
        padding-top: 0.5rem;
        padding-bottom: 0.5rem;
        position: relative;
    }
    
    .navbar-brand {
        margin: 0 auto;
        text-align: center;
    }
    
    .logo-img {
        height: 65px;
        width: auto;
        margin: 0 auto;
    }
    
    .mobile-nav-row {
        display: flex !important;
        flex-direction: row;
        justify-content: center;
        align-items: center;
        gap: 0.5rem;
        width: 100%;
    }
    
    .home-btn-mobile {
        font-size: 0.75rem;
        padding: 0.45rem 0.75rem;
        white-space: nowrap;
    }
    
    .home-btn-mobile i {
        font-size: 0.95rem;
    }
    
    .home-btn-mobile span {
        font-size: 0.75rem;
    }
    
    .mobile-nav-row .btn {
        font-size: 0.75rem;
        padding: 0.45rem 0.75rem;
        white-space: nowrap;
    }
    
    .mobile-nav-row .navbar-toggler {
        margin: 0;
        border: 2px solid var(--primary-color);
    }
    
    .navbar-collapse {
        background: white;
        padding: 1rem;
        margin-top: 1rem;
        border-radius: 10px;
        box-shadow: var(--shadow-md);
        max-width: 100%;
        order: 4;
    }
    
    /* Hero Section Mobile Fix */
    .hero-section {
        min-height: 85vh;
        padding: 140px 15px 60px;
        background-attachment: scroll;
        overflow-x: hidden;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .hero-overlay {
        background: linear-gradient(180deg, 
                    rgba(255, 255, 255, 0.15) 0%, 
                    rgba(255, 255, 255, 0.35) 100%) !important;
    }
    
    .hero-section h1 {
        color: #000000 !important;
        text-shadow: none;
    }
    
    .hero-section .lead {
        color: #000000 !important;
        text-shadow: none;
    }
    
    .hero-section .typing-text {
        font-size: 0.85rem !important;
        line-height: 1.4 !important;
        word-wrap: break-word !important;
        white-space: normal !important;
        max-width: 100% !important;
        display: block !important;
    }
    
    .hero-content {
        width: 100%;
        padding: 1.5rem;
        text-align: center;
    }
    
    .hero-section h1 {
        font-size: 1.4rem !important;
        line-height: 1.3;
        margin-bottom: 1rem;
        word-wrap: break-word;
        color: #ffffff !important;
    }
    
    .hero-section .lead {
        font-size: 0.85rem !important;
        margin-bottom: 1.25rem;
        line-height: 1.5;
        color: #ffffff !important;
    }
    
    .hero-buttons {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .hero-buttons .btn {
        padding: 0.9rem 1.5rem;
        font-size: 0.95rem;
        width: 100%;
        white-space: normal;
        line-height: 1.4;
    }
    
    .feature-card {
        margin-bottom: 1rem;
    }
    
    .contact-card {
        margin-bottom: 1rem;
    }
}

/* Portrait Mode (Dik) - Overlay daha açık */
@media (max-width: 767px) and (orientation: portrait) {
    .hero-overlay {
        background: linear-gradient(180deg, 
                    rgba(255, 255, 255, 0.20) 0%, 
                    rgba(255, 255, 255, 0.35) 100%) !important;
    }
}

/* Landscape Mode (Yatay) - Overlay orta */
@media (max-width: 767px) and (orientation: landscape) {
    .hero-overlay {
        background: linear-gradient(180deg, 
                    rgba(255, 255, 255, 0.10) 0%, 
                    rgba(255, 255, 255, 0.25) 100%) !important;
    }
}

@media (max-width: 575px) {
    .hero-section h1 {
        font-size: 1.75rem;
    }
    
    .hero-section .lead {
        font-size: 1.1rem;
    }
    
    .display-5 {
        font-size: 2rem;
    }
}

/* ==========================================================================
   16. Owl Carousel Custom Styles
   ========================================================================== */
.owl-carousel .owl-nav button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-color) !important;
    color: white !important;
    width: 50px;
    height: 50px;
    border-radius: 50% !important;
    font-size: 1.5rem !important;
    transition: var(--transition);
}

.owl-carousel .owl-nav button:hover {
    background: var(--primary-dark) !important;
    transform: translateY(-50%) scale(1.1);
}

.owl-carousel .owl-nav button.owl-prev {
    left: -25px;
}

.owl-carousel .owl-nav button.owl-next {
    right: -25px;
}

.owl-carousel .owl-dots {
    margin-top: 2rem;
}

.owl-carousel .owl-dot span {
    background: var(--primary-light) !important;
    width: 12px;
    height: 12px;
    margin: 5px;
    transition: var(--transition);
}

.owl-carousel .owl-dot.active span {
    background: var(--primary-color) !important;
    transform: scale(1.3);
}

/* ==========================================================================
   17. Bootstrap Overrides
   ========================================================================== */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border: none;
    transition: var(--transition);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.badge {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
}

/* ==========================================================================
   18. Loading Animation
   ========================================================================== */
.page-loading {
    position: fixed;
    top: 0;
    left: 0;
  width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  display: flex;
  align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.page-loading.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   19. Lightbox Customization
   ========================================================================== */
.lightbox {
    z-index: 10000 !important;
}

/* ==========================================================================
   20. Page Header
   ========================================================================== */
.page-header {
    padding-top: 120px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
  position: absolute;
  top: 0;
  left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

/* ==========================================================================
   21. Timeline Styles (Hakkımızda Page)
   ========================================================================== */
.timeline {
    position: relative;
    margin-top: 3rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
  height: 100%;
    background: linear-gradient(180deg, var(--primary-color), var(--primary-light));
    border-radius: 2px;
}

.timeline-item {
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 30px;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: white;
    border: 4px solid var(--primary-color);
    border-radius: 50%;
  z-index: 2;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 52%;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 52%;
}

.timeline-content {
    border: 2px solid #f0f0f0;
    transition: var(--transition);
}

.timeline-content:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.about-highlight {
    border-left: 5px solid var(--primary-color);
    border-top: 1px solid #f0f0f0;
    border-right: 1px solid #f0f0f0;
    border-bottom: 1px solid #f0f0f0;
}

/* ==========================================================================
   22. Back to Top Button
   ========================================================================== */
.back-to-top {
  position: fixed;
    bottom: 100px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 50%;
  font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow-md);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-color);
    transform: translateY(-5px);
}

/* ==========================================================================
   23. Responsive Timeline
   ========================================================================== */
@media (max-width: 767px) {
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item::before {
        left: 20px;
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 60px;
        margin-right: 0;
    }
    
    .page-header {
        padding-top: 100px;
    }
}

/* ==========================================================================
   24. ULTRA PREMIUM EFFECTS
   ========================================================================== */

/* Glassmorphism Cards */
.glass-card {
    background: var(--gradient-glass);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-premium);
    transition: var(--transition-premium);
}

.glass-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-neon);
}

/* Professional Glow Effects */
.professional-glow {
    color: var(--primary-blue);
    text-shadow: 0 2px 4px rgba(30, 58, 138, 0.3);
}

.professional-border {
    border: 2px solid var(--primary-blue);
    box-shadow: var(--shadow-professional);
}

/* 3D Card Flip Effects */
.card-3d {
    perspective: 1000px;
    transition: var(--transition-premium);
}

.card-3d-inner {
    position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.card-3d:hover .card-3d-inner {
    transform: rotateY(180deg);
}

.card-3d-front, .card-3d-back {
    position: absolute;
    width: 100%;
  height: 100%;
    backface-visibility: hidden;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-premium);
}

.card-3d-back {
    transform: rotateY(180deg);
    background: var(--gradient-rainbow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

/* Parallax Background */
.parallax-bg {
    background-attachment: fixed;
    background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
    overflow: hidden;
}

.parallax-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
    background: linear-gradient(45deg, rgba(0,173,181,0.8) 0%, rgba(57,62,70,0.8) 100%);
    z-index: 1;
}

.parallax-content {
  position: relative;
  z-index: 2;
}

/* Particle Background */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
  position: absolute;
    background: var(--primary-blue);
    border-radius: 50%;
    opacity: 0.4;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* Professional Button Effects */
.btn-premium {
    background: var(--gradient-professional);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    padding: 12px 24px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-professional);
    text-transform: none;
    letter-spacing: 0.5px;
}

.btn-premium::before {
    content: '';
  position: absolute;
    top: 0;
    left: -100%;
  width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.4s;
}

.btn-premium:hover::before {
    left: 100%;
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-professional);
    background: var(--dark-blue);
}

.btn-premium[style*="background: #25D366"]:hover {
    background: #128C7E !important;
    border-color: #128C7E !important;
}

/* Professional Text Styles */
.professional-text {
    color: var(--primary-blue);
  font-weight: 700;
    text-shadow: var(--text-shadow-subtle);
}

.accent-text {
    color: var(--accent-blue);
    font-weight: 600;
}

/* Premium Loading Spinner */
.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(0,173,181,0.3);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Morphing Shapes */
.morph-shape {
  width: 100px;
  height: 100px;
    background: var(--gradient-neon);
    border-radius: 50%;
    animation: morph 4s ease-in-out infinite;
    position: absolute;
    opacity: 0.3;
}

@keyframes morph {
    0%, 100% { border-radius: 50%; transform: rotate(0deg); }
    25% { border-radius: 25% 75% 25% 75%; transform: rotate(90deg); }
    50% { border-radius: 75% 25% 75% 25%; transform: rotate(180deg); }
    75% { border-radius: 25% 75% 75% 25%; transform: rotate(270deg); }
}

/* Professional Gradient Text */
.professional-gradient {
    background: var(--gradient-professional);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

/* Premium Typography */
.text-premium {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    text-shadow: var(--text-shadow-premium);
    letter-spacing: 1px;
}

/* Professional Icons */
.icon-professional {
    color: var(--primary-blue);
    transition: var(--transition-smooth);
}

.icon-professional:hover {
    color: var(--accent-blue);
    transform: scale(1.1);
}


/* Ripple Button Effect */
.ripple {
    animation: ripple 0.6s ease-out;
}

@keyframes ripple {
    to {
        transform: scale(2);
        opacity: 0;
    }
}

/* Premium Gallery Effects */
.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
  height: 100%;
    background: rgba(0,0,0,0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-premium);
    color: white;
}

.gallery-card:hover .gallery-overlay {
    opacity: 1;
}

.viewer-container {
    background: var(--gradient-glass);
    padding: 20px;
    border-radius: var(--border-radius);
    backdrop-filter: var(--backdrop-blur);
}

.filter-buttons .btn {
    margin: 5px;
}

/* Premium Typing Animation */
.typing-text {
    overflow: hidden;
    border-right: 2px solid var(--neon-blue);
    white-space: nowrap;
    animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: var(--neon-blue); }
}

/* Premium Scroll Indicators */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(0,0,0,0.1);
    z-index: 9998;
}

.scroll-progress {
    height: 100%;
    background: var(--gradient-rainbow);
    width: 0%;
    transition: width 0.1s ease;
}

/* Premium Floating Elements */
.floating-element {
    position: absolute;
    animation: float-around 8s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes float-around {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(20px, -20px) rotate(90deg); }
    50% { transform: translate(-10px, -30px) rotate(180deg); }
    75% { transform: translate(-20px, 10px) rotate(270deg); }
}

/* Premium Cursor Effects */
.premium-cursor {
    cursor: none;
}

.cursor-dot {
  position: fixed;
    width: 8px;
    height: 8px;
    background: var(--neon-blue);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.1s ease;
    box-shadow: 0 0 20px var(--neon-blue);
}

.cursor-outline {
    position: fixed;
    width: 40px;
    height: 40px;
    border: 2px solid var(--neon-blue);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9998;
    transition: all 0.15s ease;
    opacity: 0.5;
}

/* Premium Text Effects */
.text-shimmer {
    background: linear-gradient(90deg, #fff 0%, #00f2fe 50%, #fff 100%);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Premium Button Hover Effects */
.btn-premium-hover {
  position: relative;
    overflow: hidden;
}

.btn-premium-hover::before {
    content: '';
  position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
  height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

.btn-premium-hover:hover::before {
    left: 100%;
}

/* ==========================================================================
   25. 360° Viewer Styles
   ========================================================================== */
.viewer-container {
    position: relative;
    height: 500px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    overflow: hidden;
}

.viewer-controls {
  position: absolute;
    top: 15px;
    right: 15px;
    z-index: 10;
  display: flex;
    gap: 10px;
}

.viewer-content {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.viewer-content img {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
    cursor: grab;
    transition: transform 0.3s ease;
}

.viewer-content img:active {
    cursor: grabbing;
}

.viewer-info {
  position: absolute;
    bottom: 15px;
    left: 15px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 10px 15px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.viewer-info h6 {
    margin: 0 0 5px 0;
    font-weight: 600;
}

.viewer-info p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.9;
}

/* 360° Card Special Effects */
.360-card {
    position: relative;
    overflow: hidden;
}

.360-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
    z-index: 2;
}

.360-card:hover::before {
    left: 100%;
}

.360-card .gallery-overlay {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
}

/* Filter Buttons */
.filter-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.filter-btn {
    border-radius: 25px;
    padding: 10px 20px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.filter-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-professional);
}

.filter-btn.active {
    background: var(--gradient-professional);
    border-color: var(--primary-blue);
    color: white;
}

/* Gallery Item Animations */
.gallery-item {
    transition: all 0.3s ease;
}

.gallery-item.hidden {
    opacity: 0;
    transform: scale(0.8);
    pointer-events: none;
}

.gallery-item.show {
    opacity: 1;
    transform: scale(1);
    pointer-events: all;
}

/* ==========================================================================
   26. Route Calculator Styles
   ========================================================================== */
.route-card {
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.route-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-professional);
    border-color: var(--primary-blue);
}

.transport-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.transport-btn {
    border-radius: 8px;
    padding: 10px 15px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid;
}

.transport-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-subtle);
}

.transport-btn.active {
    background: var(--gradient-professional);
    border-color: var(--primary-blue);
    color: white;
}

.cost-calculator {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 20px;
    border-radius: 10px;
    border: 2px solid var(--light-blue);
}

.cost-item {
    font-size: 0.95rem;
}

.route-info {
    min-height: 150px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    padding: 20px;
    border: 2px solid var(--light-blue);
}

.quick-map {
    border: 2px solid var(--light-blue);
    background: var(--light-blue);
}

/* Route Details */
.route-detail {
    background: white;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
    border-left: 4px solid var(--primary-blue);
    box-shadow: var(--shadow-subtle);
}

.route-step {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
}

.route-step i {
    width: 20px;
    margin-right: 10px;
    color: var(--primary-blue);
}

.route-duration {
    background: var(--gradient-professional);
    color: white;
    padding: 8px 12px;
  border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
  display: inline-block;
    margin-top: 10px;
}

.route-distance {
    background: var(--light-blue);
    color: var(--primary-blue);
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-left: 10px;
    margin-top: 10px;
}

/* Transport Icons */
.transport-icon {
    width: 24px;
    height: 24px;
    margin-right: 8px;
}

/* Loading Animation */
.route-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.route-loading .spinner-border {
    width: 2rem;
    height: 2rem;
    color: var(--primary-blue);
}

/* Error State */
.route-error {
    background: #fee;
    color: #c33;
    padding: 15px;
    border-radius: 8px;
    border: 2px solid #fcc;
    text-align: center;
}

/* Success State */
.route-success {
    background: #efe;
    color: #363;
    padding: 15px;
    border-radius: 8px;
    border: 2px solid #cfc;
    text-align: center;
}

/* ==========================================================================
   27. Print Styles
   ========================================================================== */
@media print {
    .navbar,
    .floating-btn,
    .scroll-indicator,
    .back-to-top,
    .particles-container {
        display: none !important;
  }
}

/* ==========================================================================
   28. Room Calculation Styles
   ========================================================================== */

/* Room Cards */
.room-card {
    position: relative;
    height: 100%;
    transition: var(--room-card-transition);
}

/* Inactive Room (Normal - hiç değişmez) */
.room-card.inactive-room {
    opacity: 1;
    /* Hiçbir değişiklik yok - normal kalıyor */
}

/* Active Room (Seçili kart SÜPER belirgin) */
.room-card.active-room {
    opacity: 1;
    z-index: 10;
    position: relative;
}

.room-card.active-room .room-card-inner {
    border-width: 4px;
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.08), rgba(255, 255, 255, 0.98));
    box-shadow: 0 15px 40px rgba(0, 123, 255, 0.35), 
                0 0 0 6px rgba(0, 123, 255, 0.15);
    transform: scale(1.08);
}

.room-card.active-room .room-card-inner::before {
    opacity: 1;
    height: 6px;
    background: linear-gradient(90deg, #007bff, #0056b3, #007bff);
    animation: gradientMove 2s linear infinite;
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.room-card.active-room .room-header i {
    animation: activeRoomPulse 1.5s ease-in-out infinite;
    color: var(--primary-color) !important;
    filter: drop-shadow(0 0 10px rgba(0, 123, 255, 0.5));
}

@keyframes activeRoomPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

.room-card.active-room .duration-title {
    animation: titleBlink 1.5s ease-in-out infinite;
}

@keyframes titleBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.room-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.room-card .form-check-label {
    cursor: pointer;
  height: 100%;
    display: block;
}

.room-card-inner {
    background: white;
    border: 2px solid #e9ecef;
    border-radius: var(--room-card-border-radius);
  padding: 1rem;
    height: 100%;
    transition: var(--room-card-transition);
    box-shadow: var(--room-card-shadow);
    position: relative;
    overflow: hidden;
}

.room-card-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: var(--room-card-transition);
}

.room-card:hover .room-card-inner {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 12px 35px rgba(0, 123, 255, 0.2);
    border-color: var(--primary-color);
}

.room-card:hover .price-badge {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.room-card:hover .room-card-inner::before {
  opacity: 1;
}

.room-card input[type="radio"]:checked + .form-check-label .room-card-inner {
    border-color: var(--primary-color);
    border-width: 3px;
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.05), rgba(255, 255, 255, 0.98));
    box-shadow: 0 10px 30px rgba(0, 123, 255, 0.25), 0 0 0 4px rgba(0, 123, 255, 0.1);
    transform: scale(1.03);
}

.room-card input[type="radio"]:checked + .form-check-label .room-card-inner::before {
    opacity: 1;
    height: 5px;
}

.room-card input[type="radio"]:checked + .form-check-label .price-badge {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.room-card input[type="radio"]:checked + .form-check-label .room-header i {
    animation: bounce 0.5s ease;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Room Header */
.room-header {
    text-align: center;
    margin-bottom: 0.75rem;
}

.room-header i {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
    display: block;
}

.room-header h6 {
    margin: 0;
    font-weight: 700;
    color: var(--text-dark);
    font-size: 1rem;
}

/* Room Prices */
.room-prices {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 0;
}

.price-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
}

.price-label {
    font-size: 0.65rem;
    color: #6c757d;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.price-badge {
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    text-align: center;
    transition: var(--room-card-transition);
  width: 100%;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.price-badge.daily {
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: white;
    position: relative;
    overflow: hidden;
}

.price-badge.daily::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite;
}

.price-badge.monthly {
    background: linear-gradient(135deg, #28a745, #1e7e34);
    color: white;
    position: relative;
    overflow: hidden;
}

.price-badge.monthly::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite 1s;
}

.price-badge.season {
    background: linear-gradient(135deg, #ffc107, #e0a800);
    color: #212529;
    position: relative;
    overflow: hidden;
    font-weight: 800;
}

.price-badge.season::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.5), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite 2s;
}

@keyframes shine {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

/* Room Duration Selection (Her kartta) */
.room-duration-selection {
    margin-top: 1rem;
    padding-top: 1rem;
    display: block; /* Her zaman görünür */
}

/* Active room'da süre seçimi daha belirgin */
.room-card.active-room .room-duration-selection {
    animation: fadeInUp 0.5s ease-out;
}

.room-card.active-room .duration-divider {
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    height: 3px;
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.3);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
  opacity: 1;
        transform: translateY(0);
    }
}

.duration-divider {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    margin-bottom: 0.75rem;
}

.duration-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.duration-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.duration-btn {
    position: relative;
    cursor: pointer;
    display: block;
}

.duration-btn input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.duration-btn span {
    display: block;
    padding: 0.5rem;
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.duration-btn:hover span {
    background: rgba(0, 123, 255, 0.05);
    border-color: var(--primary-color);
}

.duration-btn input:checked + span {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
    transform: scale(1.05);
}

/* Room Cost Preview (Her kartın altında) */
.room-cost-preview {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 2px dashed #e9ecef;
}

.cost-preview-content {
    background: linear-gradient(135deg, #f8fff8 0%, #f0fff0 100%);
    border: 2px solid #28a745;
    border-radius: 10px;
    padding: 1rem;
    text-align: center;
}

.mini-discount {
    background: rgba(255, 107, 107, 0.1);
    padding: 0.5rem;
    border-radius: 6px;
    border: 1px dashed #ff6b6b;
}

.total-preview {
    margin: 0.75rem 0;
}

.total-preview .fw-bold {
    display: block;
    margin-bottom: 0.25rem;
}

/* Room Features */
.room-features {
    color: #6c757d;
    font-size: 0.8rem;
    line-height: 1.4;
    text-align: center;
    margin: 0;
}

/* Duration Selection */
.duration-selection {
    background: rgba(248, 249, 250, 0.8);
    border-radius: var(--room-card-border-radius);
    padding: 1.5rem;
    margin-top: 1rem;
}

.duration-selection-dynamic {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 3px solid var(--primary-color);
    border-radius: var(--room-card-border-radius);
    padding: 1.5rem;
    margin-top: 1rem;
    box-shadow: 0 10px 30px rgba(0, 123, 255, 0.2);
    animation: slideInDown 0.5s ease-out;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.duration-label {
    padding: 0.75rem 1.5rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    background: white;
    transition: var(--room-card-transition);
    cursor: pointer;
    font-weight: 500;
    min-width: 120px;
    text-align: center;
}

.duration-label:hover {
    border-color: var(--primary-color);
    background: rgba(30, 58, 138, 0.05);
}

.duration-selection input[type="radio"]:checked + .duration-label {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

/* Installment Banner */
.installment-banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    padding: 3px;
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
    animation: pulseGlow 3s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.installment-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg);
    animation: shimmer 3s infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 20px 50px rgba(102, 126, 234, 0.6);
        transform: scale(1.02);
    }
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

.installment-banner-inner {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    border-radius: 18px;
    padding: 2.5rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    position: relative;
    overflow: hidden;
}

.installment-banner-inner::after {
    content: '💳';
    position: absolute;
    right: -30px;
    top: -30px;
    font-size: 150px;
    opacity: 0.05;
    transform: rotate(-15deg);
}

.installment-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    animation: rotateIcon 4s ease-in-out infinite;
}

.installment-icon i {
    font-size: 2.5rem;
    color: #ffffff;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

@keyframes rotateIcon {
    0%, 100% { transform: rotate(0deg) scale(1); }
    25% { transform: rotate(-5deg) scale(1.1); }
    75% { transform: rotate(5deg) scale(1.1); }
}

.installment-content {
    flex: 1;
    text-align: center;
}

.installment-title {
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0.9;
}

.installment-highlight {
    color: #ffffff;
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    text-shadow: 0 4px 15px rgba(0,0,0,0.3);
    animation: textGlow 2s ease-in-out infinite;
}

@keyframes textGlow {
    0%, 100% {
        text-shadow: 0 4px 15px rgba(0,0,0,0.3);
    }
    50% {
        text-shadow: 0 4px 25px rgba(255,255,255,0.5), 0 0 30px rgba(255,255,255,0.3);
    }
}

.installment-subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    margin-bottom: 0;
}

.installment-badge {
    flex-shrink: 0;
    background: linear-gradient(135deg, #ffd89b 0%, #19547b 100%);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    animation: badgeBounce 2s ease-in-out infinite;
}

@keyframes badgeBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.badge-number {
    display: block;
    font-size: 3rem;
    font-weight: 900;
    color: #ffffff;
    line-height: 1;
    text-shadow: 0 4px 15px rgba(0,0,0,0.4);
}

.badge-text {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 2px;
    margin-top: 0.25rem;
}

/* Responsive */
@media (max-width: 768px) {
    .installment-banner-inner {
        flex-direction: column;
        text-align: center;
        padding: 2rem 1.5rem;
    }
    
    .installment-highlight {
        font-size: 1.5rem;
    }
    
    .installment-badge {
        padding: 1rem 1.5rem;
    }
    
    .badge-number {
        font-size: 2.5rem;
    }
}

/* Discount Banner */
.discount-banner {
    background: linear-gradient(135deg, #fff5f5 0%, #ffe6e6 100%);
    border: 2px solid #ff6b6b;
    border-radius: 12px;
    padding: 1rem;
    position: relative;
    overflow: hidden;
    animation: discountPulse 2s ease-in-out infinite;
}

.discount-banner::before {
    content: '🎉';
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 2rem;
    opacity: 0.3;
    animation: confettiSpin 3s linear infinite;
}

@keyframes discountPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.4);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(255, 107, 107, 0);
    }
}

@keyframes confettiSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.discount-badge {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
    margin-bottom: 0.75rem;
    animation: badgeShake 3s ease-in-out infinite;
}

@keyframes badgeShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.discount-badge i {
    animation: iconRotate 2s ease-in-out infinite;
}

@keyframes iconRotate {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(-15deg); }
}

.discount-details {
    background: white;
    padding: 0.75rem;
    border-radius: 8px;
}

.discount-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.25rem 0;
}

.discount-row .text-decoration-line-through {
    position: relative;
    color: #6c757d !important;
    font-size: 0.95rem !important;
    font-weight: 600 !important;
}

.discount-row .text-decoration-line-through::before {
    content: '';
    position: absolute;
    left: -5px;
    top: 50%;
    width: calc(100% + 10px);
    height: 3px;
    background: linear-gradient(90deg, #dc3545, #c82333);
    transform: translateY(-50%) rotate(-5deg);
    box-shadow: 0 2px 5px rgba(220, 53, 69, 0.3);
    z-index: 1;
}

.discount-row .text-decoration-line-through::after {
    content: '';
    position: absolute;
    left: -5px;
    top: 50%;
    width: calc(100% + 10px);
    height: 2px;
    background: rgba(220, 53, 69, 0.2);
    transform: translateY(-50%) rotate(-5deg);
    z-index: 0;
    filter: blur(2px);
}

.discount-row .text-success {
    animation: successGlow 2s ease-in-out infinite;
}

@keyframes successGlow {
    0%, 100% {
        text-shadow: 0 0 0 rgba(40, 167, 69, 0);
    }
    50% {
        text-shadow: 0 0 10px rgba(40, 167, 69, 0.5);
    }
}

/* Cost Section */
.cost-section {
    background: white;
    border-radius: var(--room-card-border-radius);
    padding: 1.5rem;
    box-shadow: var(--room-card-shadow);
    border: 1px solid #e9ecef;
    height: fit-content;
    position: sticky;
    top: 2rem;
}

.cost-breakdown-section,
.total-cost-section {
    background: rgba(248, 249, 250, 0.5);
    border-radius: 8px;
    padding: 1rem;
}

.total-cost-section {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.05), rgba(255, 255, 255, 0.8));
    border: 1px solid rgba(30, 58, 138, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .room-prices {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .price-badge {
        flex: 1;
        font-size: 0.75rem;
        padding: 0.4rem 0.5rem;
    }
    
    .duration-options {
        flex-direction: column !important;
        gap: 0.5rem !important;
    }
    
    .duration-label {
        min-width: auto;
        width: 100%;
    }
    
    .cost-section {
        position: static;
        margin-top: 2rem;
    }
}

@media (max-width: 576px) {
    .room-card-inner {
        padding: 1rem;
    }
    
    .room-header i {
        font-size: 1.5rem;
    }
    
    .room-header h6 {
        font-size: 1rem;
    }
    
    .price-badge {
        font-size: 0.7rem;
        padding: 0.3rem 0.4rem;
    }
}

/* Animation for selected room */
@keyframes roomSelected {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
    100% {
        transform: scale(1);
    }
}

.room-card input[type="radio"]:checked + .form-check-label .room-card-inner {
    animation: roomSelected 0.3s ease-in-out;
}