/* ========================================
   LUXURY GRADUATION INVITATION DESIGN
======================================== */

/* SVN-Poppins Font Face Definitions */
@font-face {
    font-family: 'SVN-Poppins';
    font-style: normal;
    font-weight: 300;
    src: url('https://cdn.jsdelivr.net/gh/webfonts/vietnamese-webfonts@main/SVN-Poppins/SVN-Poppins-Light.woff2') format('woff2'),
         url('https://cdn.jsdelivr.net/gh/webfonts/vietnamese-webfonts@main/SVN-Poppins/SVN-Poppins-Light.woff') format('woff');
}

@font-face {
    font-family: 'SVN-Poppins';
    font-style: normal;
    font-weight: 400;
    src: url('https://cdn.jsdelivr.net/gh/webfonts/vietnamese-webfonts@main/SVN-Poppins/SVN-Poppins-Regular.woff2') format('woff2'),
         url('https://cdn.jsdelivr.net/gh/webfonts/vietnamese-webfonts@main/SVN-Poppins/SVN-Poppins-Regular.woff') format('woff');
}

@font-face {
    font-family: 'SVN-Poppins';
    font-style: normal;
    font-weight: 500;
    src: url('https://cdn.jsdelivr.net/gh/webfonts/vietnamese-webfonts@main/SVN-Poppins/SVN-Poppins-Medium.woff2') format('woff2'),
         url('https://cdn.jsdelivr.net/gh/webfonts/vietnamese-webfonts@main/SVN-Poppins/SVN-Poppins-Medium.woff') format('woff');
}

@font-face {
    font-family: 'SVN-Poppins';
    font-style: normal;
    font-weight: 600;
    src: url('https://cdn.jsdelivr.net/gh/webfonts/vietnamese-webfonts@main/SVN-Poppins/SVN-Poppins-SemiBold.woff2') format('woff2'),
         url('https://cdn.jsdelivr.net/gh/webfonts/vietnamese-webfonts@main/SVN-Poppins/SVN-Poppins-SemiBold.woff') format('woff');
}

@font-face {
    font-family: 'SVN-Poppins';
    font-style: normal;
    font-weight: 700;
    src: url('https://cdn.jsdelivr.net/gh/webfonts/vietnamese-webfonts@main/SVN-Poppins/SVN-Poppins-Bold.woff2') format('woff2'),
         url('https://cdn.jsdelivr.net/gh/webfonts/vietnamese-webfonts@main/SVN-Poppins/SVN-Poppins-Bold.woff') format('woff');
}

/* Reset & Variables */
:root {
    --primary-gold: #d4af37;
    --secondary-gold: #f7e7a1;
    --deep-navy: #1a1a2e;
    --soft-white: #fefefe;
    --warm-cream: #f8f6f0;
    --rose-gold: #e8b4a0;
    --blush-pink: #f4d2d7;
    --sage-green: #9caf88;
    --lavender: #b19cd9;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-gold: linear-gradient(135deg, #d4af37 0%, #f7e7a1 100%);
    --gradient-rose: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 20px 40px rgba(0, 0, 0, 0.15);
    --shadow-strong: 0 30px 60px rgba(0, 0, 0, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Vietnamese font support */
body, html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: 'Tahoma', 'Segoe UI', 'Arial', sans-serif;
    background: linear-gradient(135deg, 
        #667eea 0%, 
        #764ba2 25%, 
        #ff9a9e 50%, 
        #fecfef 75%, 
        #a8edea 100%);
    background-attachment: fixed;
    min-height: 100vh;
    color: var(--deep-navy);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Decorative Elements */
.decoration-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.golden-leaves {
    position: absolute;
    width: 100%;
    height: 100%;
}

.leaf {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--gradient-gold);
    border-radius: 0 100% 0 100%;
    opacity: 0.3;
    animation: leafFloat 8s infinite ease-in-out;
}

.leaf-1 { top: 10%; left: 5%; animation-delay: 0s; }
.leaf-2 { top: 20%; right: 10%; animation-delay: 1s; }
.leaf-3 { top: 60%; left: 15%; animation-delay: 2s; }
.leaf-4 { top: 70%; right: 20%; animation-delay: 3s; }
.leaf-5 { top: 40%; left: 80%; animation-delay: 4s; }
.leaf-6 { top: 80%; right: 5%; animation-delay: 5s; }

@keyframes leafFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 0.3; }
    25% { transform: translateY(-15px) rotate(90deg); opacity: 0.6; }
    50% { transform: translateY(-30px) rotate(180deg); opacity: 0.8; }
    75% { transform: translateY(-15px) rotate(270deg); opacity: 0.6; }
}

.floating-hearts {
    position: absolute;
    width: 100%;
    height: 100%;
}

.heart {
    position: absolute;
    font-size: 24px;
    opacity: 0.4;
    animation: heartFloat 6s infinite ease-in-out;
}

.heart-1 { top: 15%; left: 10%; animation-delay: 0s; }
.heart-2 { top: 40%; right: 15%; animation-delay: 1.5s; }
.heart-3 { top: 65%; left: 20%; animation-delay: 3s; }
.heart-4 { top: 85%; right: 10%; animation-delay: 4.5s; }

@keyframes heartFloat {
    0%, 100% { transform: translateY(0px) scale(1); opacity: 0.4; }
    50% { transform: translateY(-20px) scale(1.1); opacity: 0.8; }
}

/* Main Wrapper */
.main-wrapper {
    position: relative;
    z-index: 10;
    padding: 40px 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.invitation-container {
    max-width: 900px;
    margin: 0 auto;
    animation-duration: 1.2s;
}

/* Header Section */
.invitation-header {
    margin-bottom: 40px;
}

.golden-ornament {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

.ornament-line {
    width: 80px;
    height: 2px;
    background: var(--gradient-gold);
    border-radius: 1px;
    position: relative;
}

.ornament-line::before {
    content: '';
    position: absolute;
    top: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--primary-gold);
    border-radius: 50%;
}

.graduation-cap-icon {
    font-size: 3rem;
    color: var(--primary-gold);
    text-shadow: 0 4px 8px rgba(212, 175, 55, 0.3);
    animation: capBounce 2s infinite ease-in-out;
}

@keyframes capBounce {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(5deg); }
}

.main-title {
    font-family: 'Great Vibes', 'Dancing Script', 'Brush Script MT', cursive;
    font-size: 4rem;
    font-weight: 400;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.sub-title {
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1.2rem;
    color: var(--soft-white);
    font-weight: 300;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.9;
    margin-bottom: 20px;
}

.date-highlight {
    display: inline-block;
    background: rgba(255, 255, 255, 0.95);
    color: var(--deep-navy);
    padding: 15px 30px;
    border-radius: 50px;
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: 3px;
    box-shadow: var(--shadow-medium);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(212, 175, 55, 0.3);
}

/* Invitation Card */
.invitation-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 30px;
    box-shadow: var(--shadow-strong);
    border: 1px solid rgba(255, 255, 255, 0.3);
    overflow: hidden;
    position: relative;
}

.invitation-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-gold);
}

.card-inner {
    padding: 50px 40px;
}

/* Greeting Section */
.greeting-section {
    text-align: center;
    margin-bottom: 40px;
}

.recipient-name-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
}

.heart-decoration {
    font-size: 1.5rem;
    animation: heartPulse 2s infinite ease-in-out;
}

@keyframes heartPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.recipient-name {
    font-family: 'Dancing Script', 'Great Vibes', 'Brush Script MT', cursive;
    font-size: 3rem;
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.greeting-message {
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1.1rem;
    color: #555;
    font-style: italic;
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

/* Image Section */
.image-section {
    margin: 40px 0;
    text-align: center;
}

.image-frame {
    position: relative;
    display: inline-block;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    transition: transform 0.3s ease;
}

.image-frame:hover {
    transform: scale(1.02);
}

.graduation-photo {
    width: 100%;
    max-width: 500px;
    height: 300px;
    object-fit: cover;
    display: block;
}

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: white;
    padding: 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.image-frame:hover .image-overlay {
    transform: translateY(0);
}

.overlay-text {
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1.1rem;
    font-weight: 500;
    text-align: center;
}

/* Event Details */
.event-details-section {
    margin: 50px 0;
}

.details-title {
    text-align: center;
    margin-bottom: 40px;
}

.title-decoration {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.title-line {
    width: 60px;
    height: 2px;
    background: var(--gradient-gold);
    border-radius: 1px;
    position: relative;
}

.title-line::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -5px;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--primary-gold);
    border-radius: 50%;
}

.title-text {
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--deep-navy);
    letter-spacing: 1px;
    text-transform: uppercase;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    max-width: 900px;
    margin: 0 auto;
}

.detail-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px 25px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.2);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    transform: translateY(0);
}

.detail-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.detail-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-gold);
}

.card-accent {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(255, 154, 158, 0.1));
    border-radius: 50%;
    opacity: 0.5;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    position: relative;
    z-index: 2;
}

.icon-wrapper {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    position: relative;
}

.icon-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-gold);
    border-radius: 15px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.detail-card:hover .icon-wrapper::after {
    opacity: 1;
}

.icon-wrapper i {
    font-size: 1.4rem;
    color: white;
    position: relative;
    z-index: 1;
}

.card-title {
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-gold);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.main-text {
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--deep-navy);
    margin-bottom: 5px;
    line-height: 1.3;
}

.time-detail {
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 8px 0;
}

.location-detail {
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--deep-navy);
    margin: 5px 0;
    opacity: 0.8;
}

.sub-text {
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 0.95rem;
    color: #666;
    font-weight: 400;
    margin-top: 8px;
    font-style: italic;
}

/* Special styling for time card */
.detail-card:nth-child(2) .icon-wrapper {
    background: var(--gradient-rose);
    box-shadow: 0 8px 25px rgba(255, 154, 158, 0.3);
}

.detail-card:nth-child(2) .card-title {
    color: #ff6b9d;
}

/* Special styling for location card */
.detail-card:nth-child(3) .icon-wrapper {
    background: linear-gradient(135deg, #667eea, #764ba2);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

/* Response Section */
.response-section {
    margin-top: 40px;
}

.response-prompt {
    text-align: center;
    margin-bottom: 30px;
}

.prompt-text {
    display: inline-block;
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--deep-navy);
    position: relative;
    padding: 0 20px;
}

.prompt-divider {
    height: 2px;
    background: var(--gradient-gold);
    width: 100px;
    margin: 15px auto 0;
    border-radius: 1px;
}

.button-container {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.response-btn {
    position: relative;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50px;
    padding: 18px 35px;
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    min-width: 200px;
    justify-content: center;
}

.response-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-strong);
}

.btn-decline {
    background: var(--gradient-rose) !important;
    color: var(--deep-navy) !important;
}

.btn-icon {
    font-size: 1.2rem;
}

.btn-text {
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-weight: 600;
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.response-btn:hover .btn-shine {
    left: 100%;
}

/* Footer */
.invitation-footer {
    text-align: center;
    margin-top: 40px;
}

.footer-decoration {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.decoration-dots {
    display: flex;
    gap: 8px;
}

.decoration-dots span {
    width: 6px;
    height: 6px;
    background: var(--primary-gold);
    border-radius: 50%;
    display: block;
    opacity: 0.7;
}

.footer-text {
    font-family: 'Dancing Script', 'Great Vibes', 'Brush Script MT', cursive;
    font-size: 1.4rem;
    color: var(--soft-white);
    margin: 0;
    font-weight: 500;
}

/* Modal Styles */
.modal {
    z-index: 10000;
    transition: opacity 0.5s ease-in;
}

.modal-dialog-centered {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 3.5rem);
}

.modal-dialog {
    margin: 0;
    position: relative;
}

.modal-content {
    border: none;
    border-radius: 25px;
    box-shadow: var(--shadow-strong);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.modal-body {
    padding: 40px;
    text-align: center;
}

.response-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.response-content h3 {
    font-family: 'Dancing Script', 'Great Vibes', 'Brush Script MT', cursive;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--deep-navy);
}

.response-content p {
    font-family: 'Tahoma', 'Segoe UI', sans-serif;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 15px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-wrapper {
        padding: 20px 0;
    }
    
    .card-inner {
        padding: 30px 20px;
    }
    
    .main-title {
        font-size: 3rem;
    }
    
    .recipient-name {
        font-size: 2.2rem;
    }
    
    .graduation-cap-icon {
        font-size: 2.5rem;
    }
    
    .button-container {
        flex-direction: column;
        align-items: center;
    }
    
    .response-btn {
        width: 100%;
        max-width: 300px;
    }
    
    .details-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        max-width: 100%;
    }
    
    .detail-card {
        padding: 25px 20px;
    }
    
    .title-line {
        width: 40px;
    }
    
    .title-decoration {
        gap: 15px;
    }
    
    .golden-ornament {
        flex-direction: column;
        gap: 15px;
    }
    
    .ornament-line {
        width: 60px;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 2.5rem;
    }
    
    .recipient-name {
        font-size: 2rem;
    }
    
    .date-highlight {
        font-size: 1.2rem;
        padding: 12px 25px;
        letter-spacing: 2px;
    }
    
    .modal-body {
        padding: 30px 20px;
    }
}

/* Smooth Animations */
html {
    scroll-behavior: smooth;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-gold);
    border-radius: 5px;
}

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

/* Gallery Section */
.gallery-section {
    margin: 50px 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.gallery-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

/* Video specific styling */
.gallery-item video.gallery-image {
    background: #000;
}

.gallery-item video::-webkit-media-controls {
    display: none !important;
}

.gallery-item video::-webkit-media-controls-enclosure {
    display: none !important;
}

.gallery-item:hover .gallery-image {
    transform: scale(1.05);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.gallery-overlay i {
    color: white;
    font-size: 2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Gallery Modal */
.gallery-modal-content {
    position: relative;
}

.gallery-navigation {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    pointer-events: none;
}

.gallery-nav-btn {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--deep-navy);
    cursor: pointer;
    transition: all 0.3s ease;
    pointer-events: all;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.gallery-nav-btn:hover {
    background: white;
    transform: scale(1.1);
}

.gallery-nav-btn i {
    font-size: 1.2rem;
}

.z-index-high {
    z-index: 1060;
}

/* Responsive Gallery */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .gallery-nav-btn {
        width: 40px;
        height: 40px;
    }
    
    .gallery-nav-btn i {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

/* Loading Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}