/* 
* Trinity York City University - Main Stylesheet
* Version: 2.0
*/

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400&family=Poppins:wght@300;400;500;600;700&display=swap');

/* Global Styles */
:root {
    --primary: #1a3d7c;
    --primary-light: #2c5cb4;
    --primary-dark: #102a57;
    --secondary: #e74c3c;
    --secondary-light: #f86e5e;
    --accent: #ffc107;
    --light: #f8f9fa;
    --dark: #343a40;
    --text-light: #6c757d;
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    --transition-slow: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: all 0.3s ease;
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Poppins', sans-serif;
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 15px 35px rgba(0, 0, 0, 0.1);
}

/* Base Elements */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: #333;
    line-height: 1.7;
    overflow-x: hidden;
    background-color: #fdfdfd;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
}

p {
    opacity: 0.9;
}

.big-text {
    font-size: clamp(2rem, 5vw, 4rem);
    line-height: 1.2;
    font-weight: 700;
}

.medium-text {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
}

.highlight-text {
    position: relative;
    display: inline-block;
}

.highlight-text::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0.1em;
    height: 0.3em;
    width: 100%;
    background-color: rgba(255, 193, 7, 0.4);
    z-index: -1;
    transition: var(--transition-fast);
}

.highlight-text:hover::after {
    height: 0.6em;
}

.section-padding {
    padding: clamp(3rem, 10vh, 6rem) 0;
}

.section-title {
    position: relative;
    margin-bottom: 2rem;
    font-family: var(--font-heading);
}

.section-title-line {
    position: relative;
    display: inline-block;
}

.section-title-line::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -0.5rem;
    height: 3px;
    width: 60px;
    background: var(--gradient-primary);
    transition: var(--transition-fast);
}

.section-title-line:hover::after {
    width: 100%;
}

.btn {
    border-radius: 2px;
    padding: 0.8rem 1.5rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 0.85rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-fast);
}

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-light {
    background: #fff;
    color: var(--primary);
    border: none;
}

.btn-light:hover {
    background: #f8f9fa;
    color: var(--primary-dark);
}

.btn-outline-primary {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: white;
}

.btn-link {
    position: relative;
    padding: 0;
    font-weight: 500;
    color: var(--primary);
    text-decoration: none;
}

.btn-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition-fast);
}

.btn-link:hover::after {
    width: 100%;
}

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

.bg-primary {
    background: var(--gradient-primary) !important;
}

/* Card Styles */
.card {
    border: none;
    border-radius: 0.5rem;
    overflow: hidden;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.card-hover-zoom {
    position: relative;
    overflow: hidden;
}

.card-hover-zoom img {
    transition: var(--transition-slow);
}

.card-hover-zoom:hover img {
    transform: scale(1.05);
}

.card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
    color: white;
    transform: translateY(20%);
    opacity: 0;
    transition: var(--transition-fast);
}

.card-hover-zoom:hover .card-overlay {
    transform: translateY(0);
    opacity: 1;
}

.card-img-top {
    height: 220px;
    object-fit: cover;
}

/* Navigation */
.navbar {
    padding: 1rem 0;
    transition: var(--transition-fast);
}

.navbar.navbar-shrink {
    padding: 0.5rem 0;
    background-color: rgba(255, 255, 255, 0.97) !important;
    box-shadow: var(--shadow-sm);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-weight: 700;
}

.navbar-brand img {
    transition: var(--transition-fast);
}

.navbar-light .navbar-nav .nav-link {
    position: relative;
    font-weight: 500;
    color: var(--dark);
    margin: 0 0.5rem;
    padding: 0.5rem;
}

.navbar-light .navbar-nav .nav-link::before {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary);
    transition: var(--transition-fast);
    opacity: 0;
}

.navbar-light .navbar-nav .nav-link:hover::before,
.navbar-light .navbar-nav .nav-link.active::before {
    width: 100%;
    opacity: 1;
}

.navbar-light .navbar-nav .nav-link.active,
.navbar-light .navbar-nav .nav-link:hover {
    color: var(--primary);
}

/* Hero Section */
#hero {
    position: relative;
    display: flex;
    align-items: center;
    padding-top: 0;
    overflow: hidden;
}

.hero-slider .owl-stage-outer {
    overflow: visible;
}

.hero-slide {
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    aspect-ratio: 2/1; /* 设置2:1的宽高比 */
    display: flex;
    align-items: center;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 3rem;
    border-radius: 0.5rem;
    max-width: 600px;
}

.hero-bg-rotate {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    background-size: cover;
    background-position: center;
    animation: bgRotate 20s infinite alternate;
}

@keyframes bgRotate {
    0% {
        transform: scale(1);
    }
    100% {
        transform: scale(1.1);
    }
}

.hero-text {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s forwards 0.5s;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-btns {
    margin-top: 2rem;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 1s forwards 1s;
}

/* Features Section */
.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.feature-icon::before {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    right: -8px;
    bottom: -8px;
    border-radius: 50%;
    background: rgba(26, 61, 124, 0.15);
    z-index: -1;
    transform: scale(0);
    transition: var(--transition-fast);
}

.feature-card:hover .feature-icon::before {
    transform: scale(1);
}

.feature-card {
    padding: 2rem;
    transition: var(--transition-fast);
    border-radius: 0.5rem;
    height: 100%;
}

.feature-card:hover {
    background-color: white;
    box-shadow: var(--shadow-md);
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-weight: 600;
}

/* Programs Section */
.program-card {
    position: relative;
    overflow: hidden;
    height: 300px;
    border-radius: 0.5rem;
    cursor: pointer;
}

.program-card-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

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

.program-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.2) 50%, rgba(0,0,0,0) 100%);
    color: white;
    transition: var(--transition-fast);
}

.program-card:hover .program-card-overlay {
    background: linear-gradient(to top, rgba(26, 61, 124, 0.85) 0%, rgba(26, 61, 124, 0.6) 50%, rgba(26, 61, 124, 0.2) 100%);
}

.program-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.program-card-text {
    font-size: 0.9rem;
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-fast);
}

.program-card:hover .program-card-text {
    opacity: 1;
    transform: translateY(0);
}

/* Events Section */
.event-date {
    min-width: 70px;
    height: 70px;
    border-radius: 0.25rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.event-day {
    font-size: 1.75rem;
    line-height: 1;
    font-weight: 700;
}

.event-month {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.event-card {
    transition: var(--transition-fast);
    border-radius: 0.5rem;
    overflow: hidden;
    height: 100%;
}

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

.event-card .card-title {
    font-weight: 600;
}

/* Testimonials */
.testimonial-card {
    background-color: white;
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.testimonial-card::before {
    content: '\201C';
    font-family: Georgia, serif;
    position: absolute;
    top: 0;
    left: 1.5rem;
    font-size: 5rem;
    color: var(--primary);
    opacity: 0.2;
    line-height: 1;
}

.testimonial-img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid white;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* Page Banner */
.page-banner {
    position: relative;
    padding: 4rem 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.4) 100%);
}

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

/* 添加一个特定的类用于2:1比例的横幅 */
.page-banner-2x1 {
    position: relative;
    padding: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    aspect-ratio: 2/1;
    display: flex;
    align-items: center;
}

.page-banner-2x1::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.4) 100%);
}

.page-banner-2x1 .banner-content {
    padding: 2rem;
    margin: 1rem 0;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 3px;
    background-color: var(--primary);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1.5px;
}

.timeline-container {
    padding: 10px 40px;
    position: relative;
    width: 50%;
}

.timeline-container::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background-color: white;
    border: 3px solid var(--primary);
    top: 15px;
    border-radius: 50%;
    z-index: 1;
}

.left {
    left: 0;
}

.right {
    left: 50%;
}

.left::before {
    content: " ";
    height: 0;
    position: absolute;
    top: 22px;
    width: 0;
    z-index: 1;
    right: 30px;
    border: medium solid var(--light);
    border-width: 10px 0 10px 10px;
    border-color: transparent transparent transparent var(--light);
}

.right::before {
    content: " ";
    height: 0;
    position: absolute;
    top: 22px;
    width: 0;
    z-index: 1;
    left: 30px;
    border: medium solid var(--light);
    border-width: 10px 10px 10px 0;
    border-color: transparent var(--light) transparent transparent;
}

.right::after {
    left: -10px;
}

.timeline-content {
    padding: 20px 30px;
    background-color: white;
    position: relative;
    border-radius: 6px;
    box-shadow: var(--shadow-sm);
}

/* Animations */
.reveal {
    position: relative;
    transform: translateY(50px);
    opacity: 0;
    transition: all 0.5s ease;
}

.reveal.active {
    transform: translateY(0);
    opacity: 1;
}

.scale-in {
    transform: scale(0.95);
    opacity: 0;
    transition: all 0.5s ease;
}

.scale-in.active {
    transform: scale(1);
    opacity: 1;
}

.fade-in {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.fade-in.active {
    opacity: 1;
}

/* Back to top button */
#back-to-top {
    width: 40px;
    height: 40px;
    line-height: 40px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
    z-index: 999;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 30px;
    background: var(--gradient-primary);
    border: none;
}

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

#back-to-top:hover {
    transform: translateY(-5px);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Media Queries */
@media (max-width: 991.98px) {
    .timeline::after {
        left: 31px;
    }
    
    .timeline-container {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-container::before {
        left: 60px;
        border: medium solid white;
        border-width: 10px 10px 10px 0;
        border-color: transparent white transparent transparent;
    }
    
    .left::after, .right::after {
        left: 15px;
    }
    
    .right {
        left: 0%;
    }
}

@media (max-width: 767.98px) {
    .big-text {
        font-size: clamp(1.75rem, 5vw, 2.5rem);
    }
    
    .medium-text {
        font-size: 1.5rem;
    }
    
    .hero-content {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 575.98px) {
    .section-padding {
        padding: 3rem 0;
    }
    
    .navbar-brand img {
        height: 45px !important;
    }
}

/* Additional Components for New Pages */
.timeline-point span {
    width: 30px;
    height: 30px;
    font-size: 0.9rem;
}

.timeline-date {
    min-width: 60px;
    border-radius: 4px;
}

.icon-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    transition: var(--transition-fast);
}

.icon-box.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

.icon-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.timeline-vertical {
    position: relative;
}

.timeline-vertical .timeline-item:not(:last-child)::before {
    content: '';
    position: absolute;
    height: calc(100% - 30px);
    width: 2px;
    background-color: var(--primary-light);
    left: 30px;
    top: 45px;
    opacity: 0.2;
}

/* 轮播图导航按钮和指示器样式 */
.hero-slider .owl-nav {
    position: absolute;
    width: 100%;
    top: 50%;
    transform: translateY(-50%);
    margin-top: 0;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
}

.hero-slider .owl-nav button {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.8) !important;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.hero-slider .owl-nav button:hover {
    background: var(--primary) !important;
    color: white !important;
}

.hero-slider .owl-dots {
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
}

.hero-slider .owl-dots .owl-dot span {
    width: 10px;
    height: 10px;
    margin: 5px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.hero-slider .owl-dots .owl-dot.active span,
.hero-slider .owl-dots .owl-dot:hover span {
    background: var(--primary);
}

/* 证言卡片增强样式 */
#testimonials .card {
    transition: all 0.3s ease;
    overflow: hidden;
}

#testimonials .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1) !important;
}

#testimonials .card-body {
    position: relative;
}

#testimonials .card-body:before {
    content: '\201C';
    font-family: Georgia, serif;
    position: absolute;
    top: 10px;
    left: 20px;
    font-size: 5rem;
    color: var(--primary);
    opacity: 0.1;
    line-height: 1;
}