/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0066cc;
    --primary-dark: #0052a3;
    --secondary-color: #00b4d8;
    --accent-color: #ff6b6b;
    --text-primary: #1a1a1a;
    --text-secondary: #666;
    --text-light: #999;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --gradient-primary: linear-gradient(135deg, #0066cc 0%, #00b4d8 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(0, 102, 204, 0.85) 0%, rgba(0, 180, 216, 0.75) 100%);
}

html {
    scroll-behavior: smooth;
    background: transparent;
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    overflow-y: auto;
    color: var(--text-primary);
    line-height: 1.6;
    background: transparent;
    height: 100%;
    width: 100%;
    font-size: 1rem;
    letter-spacing: normal;
    word-spacing: normal;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Full Screen Sections */
.full-screen {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    box-sizing: border-box;
    top: 0;
    font-size: 1rem;
}

section {
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    display: block;
    box-sizing: border-box;
    position: relative;
    top: 0;
    float: none;
    font-size: 1rem;
}

section + section {
    margin-top: 0 !important;
    padding-top: 0 !important;
    border-top: none !important;
    position: relative;
    top: 0;
}

/* Hero Section */
.hero-section {
    padding-top: 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 110vh;
    min-height: 110vh;
    z-index: 0;
    margin: 0;
    padding: 0;
}

.hero-image {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 110vh;
    min-height: 110vh;
    object-fit: cover;
    object-position: center;
    filter: brightness(0.85);
    z-index: 0;
    margin: 0;
    padding: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 110vh;
    min-height: 110vh;
    background: rgba(0, 0, 0, 0.2);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 2rem;
    padding-top: calc(80px + 2rem);
    animation: fadeInUp 1s ease-out;
    font-size: 1rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
}

.highlight {
    background: linear-gradient(120deg, #fff 0%, #e0f2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    font-weight: 300;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2.5rem;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    border-radius: 50px;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.cta-button svg {
    transition: transform 0.3s ease;
}

.cta-button:hover svg {
    transform: translateX(4px);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounce 2s infinite;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid white;
    border-radius: 15px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: white;
    border-radius: 2px;
    animation: scroll 2s infinite;
}

/* Credits Section */
.credits-section {
    background: transparent;
}

.section-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 110vh;
    min-height: 110vh;
    z-index: 0;
    margin: 0;
    padding: 0;
}

.section-image {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 110vh;
    min-height: 110vh;
    object-fit: cover;
    object-position: center;
    filter: brightness(0.6);
    z-index: 0;
    margin: 0;
    padding: 0;
}

.section-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 110vh;
    min-height: 110vh;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.credits-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    padding: 2rem;
    font-size: 1rem;
}

.credits-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.card-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.section-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.credit-display {
    margin: 2.5rem 0;
}

.credit-number-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.credit-label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-light);
    font-weight: 600;
}

.credit-count {
    font-size: 5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.credit-unit {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.modern-button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.25rem 2rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    margin-top: 2rem;
}

.modern-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.modern-button:active {
    transform: translateY(0);
}

.modern-button svg {
    transition: transform 0.3s ease;
}

.modern-button:hover svg {
    transform: rotate(90deg);
}

.credit-progress {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #e0e0e0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    transition: width 0.5s ease;
    width: 100%;
}

.progress-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
    display: block;
}

/* Closing Section */
.closing-section {
    background: transparent;
}

.closing-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 2rem;
    text-align: center;
    font-size: 1rem;
}

.closing-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 4rem 3rem;
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.closing-title {
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.closing-message {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.closing-decoration {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.decoration-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.decoration-text {
    font-size: 2rem;
}

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

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

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(12px);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero-content,
    .credits-content,
    .closing-content {
        padding: 1rem;
    }

    .credits-card,
    .closing-card {
        padding: 2rem 1.5rem;
    }

    .credit-count {
        font-size: 3.5rem;
    }

    .closing-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1rem;
    }

    .nav-links {
        gap: 0.75rem;
        font-size: 0.85rem;
    }

    .credits-card,
    .closing-card {
        padding: 1.5rem 1rem;
    }
}