/* CSS for Marxism-Leninism Historical Timeline Website with Bootstrap */

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

/* Custom CSS Variables */
:root {
    --classical-primary: #8b7355;
    --classical-secondary: #5d4e37;
    --classical-light: #d4c4a0;
    --classical-bg: #f4f1e8;
    --classical-text: #3a3a3a;
    --classical-accent: #b8860b;
    --parchment-gradient: linear-gradient(135deg, #f4f1e8 0%, #e8dcc0 100%);
    --shadow-soft: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.2);
    --border-radius: 15px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}


.thinker-image {
    max-width: -webkit-fill-available;
}

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

body {
    font-family: 'Noto Serif', 'Times New Roman', serif;
    background: var(--parchment-gradient);
    background-attachment: fixed;
    color: var(--classical-text);
    line-height: 1.7;
    overflow-x: hidden;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--classical-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--classical-primary);
    border-radius: 6px;
    border: 2px solid var(--classical-bg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--classical-secondary);
}

/* Parchment texture overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(139, 115, 85, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(212, 196, 160, 0.1) 0%, transparent 50%),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23d4c4a0' fill-opacity='0.05'%3E%3Cpath d='m60 0h-60v60h60v-60zm-30 30c8.284 0 15-6.716 15-15s-6.716-15-15-15-15 6.716-15 15 6.716 15 15 15z'/%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
    z-index: -1;
}

/* Custom Bootstrap Classes */
.btn-classical {
    background: linear-gradient(145deg, var(--classical-primary), var(--classical-secondary));
    border: none;
    color: white;
    font-weight: 600;
    padding: 0.75rem 2rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    box-shadow: var(--shadow-soft);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.btn-classical::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s;
}

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

.btn-classical:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    color: white;
}

.btn-outline-classical {
    border: 2px solid var(--classical-primary);
    color: var(--classical-primary);
    background: transparent;
    font-weight: 600;
    padding: 0.75rem 2rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-outline-classical:hover {
    background: var(--classical-primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-soft);
}

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

.bg-light-classical {
    background: rgba(244, 241, 232, 0.8) !important;
    backdrop-filter: blur(10px);
}

.bg-dark-classical {
    background: linear-gradient(135deg, var(--classical-secondary) 0%, #4a3f2a 100%) !important;
}

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

.text-classical-light {
    color: white !important;
}

.text-gradient {
    background: linear-gradient(45deg, var(--classical-primary), var(--classical-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* Navigation */
.navbar {
    padding: 1rem 0;
    background: rgba(93, 78, 55, 0.95) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    z-index: 1050;
}


.navbar.scrolled {
    background: rgba(93, 78, 55, 0.98) !important;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
    padding: 0.5rem 0;
}

.navbar-brand {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--classical-light) !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--classical-light) !important;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Updated Navbar show/hide functionality */
.navbar-hidden {
    transform: translateY(-100%) !important;
    opacity: 0 !important;
    pointer-events: none !important;
    transition: all 0.4s ease-in-out !important;
}

.navbar-visible {
    transform: translateY(0) !important;
    opacity: 1 !important;
    pointer-events: all !important;
    transition: all 0.4s ease-in-out !important;
}

/* Force navbar positioning */
.navbar.fixed-top {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 1050 !important;
}

/* Mobile navbar adjustments */
@media (max-width: 768px) {
    .navbar {
        padding: 0.5rem 0;
    }
    
    .navbar.scrolled {
        padding: 0.25rem 0;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.5rem 1rem;
        margin: 0;
    }
    
    .navbar-collapse {
        background: rgba(93, 78, 55, 0.98);
        border-radius: 0 0 10px 10px;
        margin-top: 1rem;
        padding: 1rem;
    }
}

/* Smooth transitions for all navbar states */
.navbar * {
    transition: all 0.3s ease;
}

/* Ensure navbar doesn't interfere with hero section */
.hero-section {
    margin-top: 0;
    position: relative;
    z-index: 1;
}

/* Active nav link styling */
.navbar-nav .nav-link.active {
    color: var(--classical-light) !important;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: 
        radial-gradient(circle at 20% 20%, rgba(139, 115, 85, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(212, 196, 160, 0.1) 0%, transparent 50%),
        var(--parchment-gradient);
}

.hero-content h1 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem !important;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 2rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-content p {
    font-size: 0.9rem !important;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    text-align: justify;
}

.subtitle {
    font-size: 1.4rem;
    font-style: italic;
    color: var(--classical-secondary);
    margin-bottom: 3rem;
    opacity: 0.9;
}

.hero-buttons .btn {
    margin: 0.5rem;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* Scroll Indicator Styling */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-decoration: none;
    z-index: 3;
}

.scroll-indicator a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 2rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.scroll-indicator a:hover {
    color: #b8860b;
    transform: scale(1.1);
}

.animate-bounce {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Section Styling */
.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 700;
    color: var(--classical-secondary);
    margin-bottom: 1rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(to right, var(--classical-primary), var(--classical-accent), var(--classical-primary));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--classical-text);
    opacity: 0.8;
    font-style: italic;
}

/* Timeline Section */
.timeline-section {
    padding: 5rem 0;
}

.timeline-wrapper {
    overflow: auto;
    border: 3px solid var(--classical-primary);
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
}

.timeline {
    display: flex;
    gap: 2rem;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: fit-content;
}

.btn-timeline-nav {
    background: var(--classical-primary);
    color: white;
    border: none;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 1.5rem;
    transition: var(--transition);
    box-shadow: var(--shadow-soft);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-timeline-nav:hover:not(:disabled) {
    background: var(--classical-secondary);
    transform: scale(1.1);
    color: white;
}

.btn-timeline-nav:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: scale(1);
    opacity: 0.5;
}

/* Milestone Cards */
.milestone-card {
    min-width: 350px;
    max-width: 370px;
    cursor: pointer;
    transition: var(--transition);
    border: none !important;
    background: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius) !important;
    overflow: hidden;
    position: relative;
}

.milestone-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--classical-primary), var(--classical-accent));
}

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

.milestone-icon {
    text-align: center;
    margin-bottom: 1rem;
}

.milestone-icon i {
    font-size: 3rem;
    color: var(--classical-primary);
    background: linear-gradient(145deg, rgba(139, 115, 85, 0.1), rgba(139, 115, 85, 0.2));
    padding: 1rem;
    border-radius: 50%;
    width: 80px;
    height: 80px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.card-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    color: var(--classical-secondary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.badge.bg-classical {
    background: var(--classical-primary) !important;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
}

.card-text {
    color: var(--classical-text);
    text-align: center;
    line-height: 1.6;
}


.modal-backdrop.show {
    opacity: 0!important;
}

.modal-backdrop {
    position:relative !important;
}

/* Modal Styling */
.classical-modal .modal-content {
    max-height: 100px;
    background: var(--parchment-gradient);
    border: 3px solid var(--classical-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
}

.classical-modal .modal-header {
    background: rgba(139, 115, 85, 0.1);
    border-bottom: 2px solid var(--classical-light);
}

.classical-modal .modal-title {
    font-family: 'Playfair Display', serif;
    color: var(--classical-secondary);
    font-weight: 600;
}

.btn-close-classical {
    filter: sepia(1) hue-rotate(25deg) saturate(2);
}

.classical-content {
    font-size: 1.05rem;
    line-height: 1.8;
    text-align: justify;
}

.classical-content h3 {
    font-family: 'Playfair Display', serif;
    color: var(--classical-secondary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--classical-light);
}

.classical-content h4, .classical-content h5 {
    color: var(--classical-primary);
    margin: 1.5rem 0 1rem 0;
    font-weight: 600;
}

.classical-content ul {
    margin: 1rem 0;
    padding-left: 2rem;
}

.classical-content li {
    margin-bottom: 0.5rem;
}

.border-bottom-classical, .border-top-classical {
    border-color: var(--classical-light) !important;
}

/* Quiz Section */
.quiz-section {
    padding: 5rem 0;
}

.question {
    border: none !important;
    background: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius) !important;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.question::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--classical-primary), var(--classical-accent));
}

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

.question-number {
    background: var(--classical-primary);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 1rem;
    flex-shrink: 0;
}

.option-item {
    padding: 1rem;
    border-radius: 10px;
    transition: var(--transition);
    margin-bottom: 0.5rem;
    border: 2px solid transparent;
}

.option-item:hover {
    background: rgba(139, 115, 85, 0.1);
    border-color: var(--classical-light);
}

.form-check-input:checked {
    background-color: var(--classical-primary);
    border-color: var(--classical-primary);
}

.quiz-result {
    padding: 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    display: none;
    margin-top: 2rem;
    animation: fadeInUp 0.5s ease;
}

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

.quiz-result.correct {
    background: rgba(76, 175, 80, 0.2);
    border: 3px solid #4caf50;
    color: #2e7d32;
}

.quiz-result.incorrect {
    background: rgba(244, 67, 54, 0.2);
    border: 3px solid #f44336;
    color: #c62828;
}

/* Footer */
footer {
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--classical-primary), var(--classical-accent), var(--classical-primary));
}

.badge.bg-classical-light {
    background: var(--classical-light) !important;
    color: var(--classical-secondary) !important;
    padding: 0.5rem 1rem;
}

/* Hero Section - HistoryPress Style */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('./pic/2.png') center/cover no-repeat,
        linear-gradient(135deg, rgba(26, 26, 26, 0.8) 0%, rgba(45, 45, 45, 0.6) 50%, rgba(26, 26, 26, 0.9) 100%);
    z-index: -2;
}



.hero-content {
    
    position: relative;
    z-index: 2;
    max-width: 600px;
}

.hero-subtitle {
    font-family: 'Playfair Display', serif !important;
    font-size: 1.1rem !important;
    font-style: italic;
    color: #b8860b !important;
    margin-bottom: 1rem !important;
    letter-spacing: 1px !important;
    text-transform: uppercase;
}


.hero-description strong {
    font-size: 3rem;
    line-height: 1;
    float: left;
    margin-right: 8px;
    margin-top: -10px;
    font-family: 'Playfair Display', serif;
    color: #b8860b;
}

.btn-classical-hero {
    background: linear-gradient(45deg, #b8860b, #daa520);
    border: none;
    color: #000;
    font-weight: 600;
    padding: 1rem 2rem;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.btn-classical-hero:hover {
    background: linear-gradient(45deg, #daa520, #ffd700);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(184, 134, 11, 0.3);
    color: #000;
}

.btn-outline-light-hero {
    border: 2px solid rgba(255, 255, 255, 0.6);
    color: white;
    background: transparent;
    font-weight: 600;
    padding: 1rem 2rem;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.btn-outline-light-hero:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.2);
}

.hero-image {
    position: relative;
    height: 80vh;
    background: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNTAwIiBoZWlnaHQ9IjYwMCIgdmlld0JveD0iMCAwIDUwMCA2MDAiIGZpbGw9Im5vbmUiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+CjxyZWN0IHdpZHRoPSI1MDAiIGhlaWdodD0iNjAwIiBmaWxsPSJyZ2JhKDI1NSwgMjU1LCAyNTUsIDAuMSkiLz4KPHN2ZyB4PSIxMDAiIHk9IjEwMCIgd2lkdGg9IjMwMCIgaGVpZ2h0PSI0MDAiPgo8cGF0aCBkPSJNMTUwIDUwQzE3MCA0MCAyMDAgNDAgMjIwIDUwQzI0MCA2MCAyNTAgODAgMjUwIDEwMEMyNTAgMTIwIDI0MCAyNDAgMjMwIDM1MEMyMjAgNDUwIDIwMCA0NzAgMTUwIDQ3MEM5MCA0NzAgNzAgNDUwIDYwIDM1MEM1MCAyNDAgNDAgMTIwIDQwIDEwMEM0MCA4MCA1MCA2MCA3MCA1MEM5MCA0MCAxMzAgNDAgMTUwIDUwWiIgZmlsbD0icmdiYSgyNTUsIDI1NSwgMjU1LCAwLjMpIiBzdHJva2U9InJnYmEoMjU1LCAyNTUsIDI1NSwgMC41KSIgc3Ryb2tlLXdpZHRoPSIyIi8+CjwvcGF0aD4KPC9zdmc+') center/contain no-repeat;
    opacity: 0.6;
    filter: sepia(1) hue-rotate(25deg) saturate(0.8);
}

/* Remove all animations and effects */
.hero-section::before {
    display: none !important;
}

@keyframes floatingParticles {
    /* Disable animation */
}

/* Updated Hero Section Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.8rem !important;
        margin-bottom: 1rem !important;
    }
    
    .hero-content {
        padding-left: 1rem !important;
        margin-top: 0 !important;
        max-width: 100% !important;
    }
    
    .hero-description {
        font-size: 0.95rem !important;
        text-align: left !important;
        margin-bottom: 2rem !important;
    }
    
    .hero-description strong {
        font-size: 2.8rem !important;
        margin-top: 0 !important;
    }
    
    .hero-buttons .btn {
        display: block !important;
        width: 100% !important;
        margin: 0.5rem 0 !important;
        padding: 1rem !important;
    }
    
    .hero-overlay {
        background: linear-gradient(
            180deg,
            rgba(0, 0, 0, 0.8) 0%,
            rgba(0, 0, 0, 0.6) 50%,
            rgba(0, 0, 0, 0.8) 100%
        ) !important;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2.2rem !important;
    }
    
    .hero-subtitle {
        font-size: 0.9rem !important;
        letter-spacing: 1px !important;
    }
    
    .hero-description strong {
        font-size: 2.2rem !important;
    }
    
    .hero-content {
        padding-left: 0.5rem !important;
    }
    
    .hero-buttons .btn {
        padding: 0.8rem 1.5rem !important;
        font-size: 0.8rem !important;
    }
}

@media (min-width: 1200px) {
    .hero-title {
        font-size: 4.2rem !important;
    }
    
    .hero-description {
        font-size: 1.1rem !important;
    }
    
    .hero-content {
        padding-left: 3rem !important;
        margin-top: -4rem !important;
    }
}

/* Custom animations for AOS */
[data-aos="zoom-in"] {
    transform: scale(0.6);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}

/* Loading animations */
.milestone-card, .question {
    opacity: 0;
    animation: slideInUp 0.6s ease forwards;
}

.milestone-card:nth-child(1) { animation-delay: 0.1s; }
.milestone-card:nth-child(2) { animation-delay: 0.2s; }
.milestone-card:nth-child(3) { animation-delay: 0.3s; }
.milestone-card:nth-child(4) { animation-delay: 0.4s; }
.milestone-card:nth-child(5) { animation-delay: 0.5s; }

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

/* Header Styles */
header {
    text-align: center;
    padding: 3rem 2rem;
    border-bottom: 3px solid #8b7355;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
}

header h1 {
    font-size: 2.8rem;
    font-weight: 700;
    color: #5d4e37;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.subtitle {
    font-size: 1.2rem;
    font-style: italic;
    color: #7a6b47;
    opacity: 0.9;
}

/* Main Content */
main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Section Headings */
section h2 {
    font-size: 2.2rem;
    color: #5d4e37;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 1rem;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(to right, #8b7355, #d4c4a0, #8b7355);
}

/* Timeline Section */
.timeline-section {
    margin-bottom: 4rem;
}

/* .timeline-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 2rem 0;
}

.timeline-wrapper {
    flex: 1;
    overflow: hidden;
    border: 2px solid #8b7355;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.2);
    padding: 1rem;
} */

.timeline {
    display: flex;
    gap: 2rem;
    transition: transform 0.5s ease;
    min-width: fit-content;
}

.timeline-nav {
    background: #8b7355;
    color: white;
    border: none;
    padding: 1rem;
    font-size: 1.5rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    min-width: 50px;
    height: 50px;
}

.timeline-nav:hover {
    background: #5d4e37;
    transform: scale(1.1);
}

.timeline-nav:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: scale(1);
}

/* Milestone Cards */
.milestone-card {
    background: linear-gradient(145deg, #f9f6ef, #e8dcc0);
    border: 2px solid #8b7355;
    border-radius: 15px;
    padding: 1.5rem;
    min-width: 300px;
    max-width: 320px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    position: relative;
}

.milestone-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    border-color: #5d4e37;
}

.milestone-card::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: linear-gradient(45deg, #8b7355, #d4c4a0);
    border-radius: 18px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.milestone-card:hover::before {
    opacity: 0.3;
}

.card-header {
    margin-bottom: 1rem;
    border-bottom: 1px solid #d4c4a0;
    padding-bottom: 0.5rem;
}

.card-header h3 {
    font-size: 1.4rem;
    color: #5d4e37;
    margin-bottom: 0.3rem;
}

.year {
    font-size: 0.9rem;
    color: #8b7355;
    font-weight: 600;
    background: rgba(139, 115, 85, 0.1);
    padding: 0.2rem 0.5rem;
    border-radius: 5px;
    display: inline-block;
}

.card-content p {
    font-size: 0.95rem;
    color: #4a4a4a;
    text-align: justify;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(3px);
}

.modal-content {
    background: linear-gradient(145deg, #f9f6ef, #e8dcc0);
    margin: 5% auto;
    padding: 2rem;
    border: 3px solid #8b7355;
    border-radius: 15px;
    width: 80%;
    max-width: 700px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    position: relative;
}

.close {
    color: #8b7355;
    float: right;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
    padding: 0.5rem;
}

.close:hover {
    color: #5d4e37;
    transform: scale(1.1);
}

.modal-body {
    margin-top: 1rem;
}

.modal-body h3 {
    color: #5d4e37;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid #d4c4a0;
    padding-bottom: 0.5rem;
}

.modal-body p {
    margin-bottom: 1rem;
    text-align: justify;
    font-size: 1.05rem;
    line-height: 1.7;
}

/* Quiz Section */
.quiz-section {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid #8b7355;
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
}

.quiz-container {
    max-width: 800px;
    margin: 0 auto;
}

.question {
    background: rgba(255, 255, 255, 0.3);
    border: 1px solid #d4c4a0;
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.question:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.question h3 {
    color: #5d4e37;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.options {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.options label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}



.options input[type="radio"] {
    margin: 0;
    accent-color: #8b7355;
}

.submit-quiz {
    background: #8b7355;
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 1rem 0;
    font-family: inherit;
}

.submit-quiz:hover {
    background: #5d4e37;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.quiz-result {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    font-weight: 600;
    display: none;
}

.quiz-result.correct {
    background: rgba(76, 175, 80, 0.2);
    border: 2px solid #4caf50;
    color: #2e7d32;
}

.quiz-result.incorrect {
    background: rgba(244, 67, 54, 0.2);
    border: 2px solid #f44336;
    color: #c62828;
}

/* Footer */
footer {
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--classical-primary), var(--classical-accent), var(--classical-primary));
}

.feedback-section .card {
    transition: var(--transition);
}

.feedback-section .card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

.feedback-item {
    padding: 1rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.feedback-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.rating-buttons .btn {
    transition: var(--transition);
}

.rating-buttons .btn:hover {
    transform: translateY(-1px);
}

.contact-info {
    background: rgba(139, 115, 85, 0.1);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--classical-light);
}

.badge.bg-classical-light {
    background: var(--classical-light) !important;
    color: var(--classical-secondary) !important;
    padding: 0.5rem 1rem;
    font-weight: 500;
}

/* Toast notifications */
.toast-container {
    z-index: 9999;
}

.toast {
    min-width: 300px;
}

/* Email link styling */
.feedback-section a[href^="mailto"] {
    text-decoration: none;
    transition: var(--transition);
}

.feedback-section a[href^="mailto"]:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Responsive adjustments for footer */
@media (max-width: 768px) {
    .feedback-item {
        margin-bottom: 1rem;
        padding: 0.75rem;
    }
    
    .rating-buttons {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .rating-buttons .btn {
        width: 100%;
    }
    
    .contact-info {
        padding: 0.75rem;
    }
    
    .about-section .row.text-center {
        margin-top: 1rem;
    }
    
    .about-section .col-4 {
        margin-bottom: 1rem;
    }
}

@media (max-width: 576px) {
    footer .col-lg-6 {
        margin-bottom: 2rem;
    }
    
    .feedback-section h4,
    .about-section h4 {
        font-size: 1.2rem;
    }
    
    .badge.bg-classical-light {
        display: block;
        margin-bottom: 0.5rem;
        width: 100%;
    }
}

/* Animation for feedback interactions */
@keyframes feedbackSuccess {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.btn:disabled {
    animation: feedbackSuccess 0.3s ease;
}