:root {
    --bg-dark: #0a0a0a;
    --bg-card: #141414;
    --bg-card-hover: #1f1f1f;
    --text-main: #f0f0f0;
    --text-muted: #a0a0a0;
    --accent-gold: #ffd700;
    --accent-gold-hover: #e6c200;
    --accent-emerald: #50c878;
    --accent-emerald-hover: #45b367;
    
    /* Fluid Typography using clamp() */
    --fs-xs: clamp(0.75rem, 0.70rem + 0.25vw, 1rem);
    --fs-sm: clamp(0.875rem, 0.83rem + 0.25vw, 1.125rem);
    --fs-base: clamp(1rem, 0.95rem + 0.25vw, 1.25rem);
    --fs-md: clamp(1.25rem, 1.15rem + 0.50vw, 1.75rem);
    --fs-lg: clamp(1.5rem, 1.35rem + 0.75vw, 2.25rem);
    --fs-xl: clamp(2rem, 1.70rem + 1.50vw, 3.5rem);
    --fs-xxl: clamp(2.5rem, 2.0rem + 2.5vw, 5rem);
    
    /* Fluid Spacing */
    --space-sm: clamp(0.5rem, 0.4rem + 0.5vw, 1rem);
    --space-md: clamp(1rem, 0.8rem + 1vw, 2rem);
    --space-lg: clamp(2rem, 1.6rem + 2vw, 4rem);
    --space-xl: clamp(4rem, 3.2rem + 4vw, 8rem);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-md);
    max-width: 1400px;
}

.text-gold { color: var(--accent-gold); }
.text-emerald { color: var(--accent-emerald); }
.text-center { text-align: center; }

h1, h2, h3 { line-height: 1.2; }

.section { padding: var(--space-xl) 0; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: 8px;
    font-size: var(--fs-base);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--accent-gold);
    color: var(--bg-dark);
}
.btn-primary:hover {
    background-color: var(--accent-gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.btn-secondary {
    background-color: var(--accent-emerald);
    color: var(--bg-dark);
}
.btn-secondary:hover {
    background-color: var(--accent-emerald-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(80, 200, 120, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: var(--accent-gold);
    border: 2px solid var(--accent-gold);
}
.btn-outline:hover {
    background-color: var(--accent-gold);
    color: var(--bg-dark);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--space-md) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: var(--fs-lg);
    font-weight: 800;
    color: var(--accent-gold);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-size: var(--fs-base);
    transition: color 0.3s;
}

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

.hero {
    min-height: 85vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    padding-top: var(--space-xl);
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, rgba(10, 10, 10, 0) 70%);
    z-index: -1;
    pointer-events: none;
}

.hero h1 {
    font-size: var(--fs-xxl);
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--accent-gold), #fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: var(--fs-lg);
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto var(--space-lg);
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
}

.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.card {
    background-color: var(--bg-card);
    border-radius: 16px;
    padding: var(--space-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease, background-color 0.3s ease, border-color 0.3s;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card:hover {
    transform: translateY(-8px);
    background-color: var(--bg-card-hover);
    border-color: rgba(80, 200, 120, 0.3);
}

.card-icon {
    font-size: var(--fs-xl);
    margin-bottom: var(--space-md);
    color: var(--accent-emerald);
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(80, 200, 120, 0.1);
    border-radius: 50%;
}

.card.gold-card:hover {
    border-color: rgba(255, 215, 0, 0.3);
}

.card.gold-card .card-icon {
    color: var(--accent-gold);
    background: rgba(255, 215, 0, 0.1);
}

.card h3 {
    font-size: var(--fs-md);
    margin-bottom: var(--space-sm);
    color: var(--text-main);
}

.card p {
    font-size: var(--fs-base);
    color: var(--text-muted);
}

.section-title {
    font-size: var(--fs-xl);
    text-align: center;
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: var(--fs-md);
    text-align: center;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

.steps-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    max-width: 800px;
    margin: 0 auto;
}

.step-item {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    background: var(--bg-card);
    padding: var(--space-md);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.02);
}

.step-number {
    font-size: var(--fs-xxl);
    font-weight: 800;
    color: rgba(255, 215, 0, 0.15);
    flex-shrink: 0;
    width: 80px;
    text-align: center;
}

.step-content h3 {
    font-size: var(--fs-lg);
    color: var(--text-main);
    margin-bottom: var(--space-sm);
}

.step-content p {
    color: var(--text-muted);
    font-size: var(--fs-base);
}

/* Admin Specific */
.admin-container {
    max-width: 700px;
    margin: var(--space-xl) auto;
    padding: var(--space-lg);
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.05);
}
.form-group {
    margin-bottom: var(--space-md);
}
.form-group label {
    display: block;
    margin-bottom: var(--space-sm);
    font-size: var(--fs-base);
    color: var(--text-muted);
}
.form-input {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-dark);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--text-main);
    border-radius: 8px;
    font-size: var(--fs-base);
    transition: border-color 0.3s;
}
.form-input:focus {
    outline: none;
    border-color: var(--accent-gold);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.alert {
    padding: var(--space-sm) var(--space-md);
    border-radius: 8px;
    margin-bottom: var(--space-md);
    font-size: var(--fs-base);
}

.alert-success {
    background: rgba(80, 200, 120, 0.1);
    color: var(--accent-emerald);
    border: 1px solid rgba(80, 200, 120, 0.3);
}

.alert-error {
    background: rgba(255, 80, 80, 0.1);
    color: #ff5050;
    border: 1px solid rgba(255, 80, 80, 0.3);
}

footer {
    padding: var(--space-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    background: var(--bg-card);
    text-align: center;
}

footer p {
    color: var(--text-muted);
    font-size: var(--fs-base);
}

footer a {
    color: var(--accent-emerald);
    text-decoration: none;
}

/* Media Queries for Large Displays Up to 8K */
@media screen and (min-width: 2560px) {
    .container {
        max-width: 2000px;
    }
    :root {
        --space-md: 2rem;
        --space-lg: 4rem;
        --space-xl: 8rem;
    }
    .grid-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media screen and (min-width: 3840px) {
    .container {
        max-width: 3000px;
    }
    :root {
        --fs-base: 1.5rem;
        --space-md: 3rem;
        --space-lg: 6rem;
        --space-xl: 12rem;
    }
    .card {
        border-radius: 24px;
        border-width: 2px;
    }
    .btn {
        border-radius: 16px;
        padding: 1.5rem 3rem;
    }
    .grid-cards {
        grid-template-columns: repeat(auto-fit, minmax(600px, 1fr));
    }
}

@media screen and (min-width: 7680px) {
    .container {
        max-width: 6000px;
    }
    :root {
        --fs-base: 2.5rem;   /* Massive scaling for 8K resolution */
        --space-md: 5rem;
        --space-lg: 10rem;
        --space-xl: 20rem;
    }
    .card {
        border-radius: 32px;
        border-width: 4px;
        padding: 8rem;
    }
    .btn {
        border-radius: 24px;
        padding: 3rem 6rem;
        border-width: 4px;
    }
    .grid-cards {
        grid-template-columns: repeat(4, 1fr);
    }
    .hero::before {
        width: 30vw;
        height: 30vw;
    }
    .card-icon {
        width: 128px;
        height: 128px;
        font-size: 5rem;
    }
}