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

:root {
    --primary: #d4af37;
    --primary-dark: #b8960a;
    --bg-dark: #1a1a2e;
    --bg-darker: #0f0f1e;
    --text-light: #ffffff;
    --text-muted: #b0b0b0;
    --accent: #ff6b6b;
    --accent-blue: #4ecdc4;

    /* Fibonacci spacing scale (8 13 21 34 55 89 144px) */
    --space-1: 0.5rem;    /* 8px */
    --space-2: 0.813rem;  /* 13px */
    --space-3: 1.313rem;  /* 21px */
    --space-4: 2.125rem;  /* 34px */
    --space-5: 3.438rem;  /* 55px */
    --space-6: 5.563rem;  /* 89px */
    --space-7: 9rem;      /* 144px */

    /* Golden ratio type scale (φ = 1.618, base 1rem) */
    --text-xs:  0.618rem;  /* 1/φ² */
    --text-sm:  0.854rem;  /* 1/φ */
    --text-base: 1rem;
    --text-md:  1.618rem;  /* φ */
    --text-lg:  2.618rem;  /* φ² */
    --text-xl:  4.236rem;  /* φ³ */
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-3);
}

/* Navigation */
.navbar {
    background-color: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--space-2) 0; /* 13px — Fibonacci */
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
    box-shadow: 0 4px 30px rgba(212, 175, 55, 0.15);
}

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

.nav-brand {
    display: flex;
    align-items: center;
}

.nav-brand img {
    height: var(--space-4); /* 34px — Fibonacci, total nav height: 13 + 34 + 13 = 60px */
    width: auto;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: var(--text-light);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

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

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    padding: var(--space-6) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: var(--text-xl);
    font-weight: 800;
    margin-bottom: var(--space-2);
    background: linear-gradient(135deg, var(--primary) 0%, #ffeb3b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: var(--text-md);
    color: var(--accent-blue);
    margin-bottom: var(--space-2);
    font-weight: 600;
}

.hero-description {
    font-size: var(--text-base);
    color: var(--text-muted);
    margin-bottom: var(--space-4);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-base);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 700;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    font-family: 'Poppins', sans-serif;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--bg-dark);
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.4);
}

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

.btn-secondary:hover {
    background-color: var(--primary);
    color: var(--bg-dark);
    transform: translateY(-2px);
}

.game-preview {
    position: relative;
    height: 600px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gameplay-screenshot {
    max-width: 100%;
    width: auto;
    height: 560px;
    border: 2px solid var(--primary);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(212, 175, 55, 0.3);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Features Section */
.features {
    padding: var(--space-6) 0;
    background-color: rgba(15, 15, 30, 0.5);
    border-top: 1px solid rgba(212, 175, 55, 0.1);
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
    box-shadow: 0 -4px 30px rgba(212, 175, 55, 0.12), 0 4px 30px rgba(212, 175, 55, 0.12);
}

.features h2,
.gameplay h2,
.download h2 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-5);
    text-align: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-4);
}

.feature-card {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.05) 0%, rgba(78, 205, 196, 0.05) 100%);
    border: 1px solid rgba(212, 175, 55, 0.2);
    padding: var(--space-4);
    border-radius: 15px;
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, rgba(78, 205, 196, 0.1) 100%);
    transform: translateY(-10px);
}

.feature-icon {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
    display: inline-block;
}

.feature-card h3 {
    font-size: var(--text-md);
    margin-bottom: var(--space-1);
    color: var(--primary);
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.8;
}

/* Gameplay Section */
.gameplay {
    padding: var(--space-6) 0;
    box-shadow: 0 -4px 30px rgba(212, 175, 55, 0.12), 0 4px 30px rgba(212, 175, 55, 0.12);
}

.gameplay-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-4);
}

.step {
    text-align: center;
    padding: var(--space-4);
}

.step-number {
    width: var(--space-6);
    height: var(--space-6);
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent-blue) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-md);
    font-weight: 800;
    margin: 0 auto var(--space-3);
    color: var(--bg-dark);
}

.step h3 {
    font-size: var(--text-md);
    margin-bottom: var(--space-1);
    color: var(--primary);
}

.step p {
    color: var(--text-muted);
    line-height: 1.8;
}

/* Download Section */
.download {
    padding: var(--space-6) 0;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, rgba(78, 205, 196, 0.1) 100%);
    border-top: 1px solid rgba(212, 175, 55, 0.2);
    text-align: center;
    box-shadow: 0 -4px 30px rgba(212, 175, 55, 0.15), 0 4px 30px rgba(212, 175, 55, 0.15);
}

.download-subtitle {
    font-size: var(--text-base);
    color: var(--text-muted);
    margin-bottom: var(--space-5);
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
    margin-bottom: var(--space-4);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    border: 2px solid rgba(212, 175, 55, 0.3);
    border-radius: 15px;
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.3s ease;
    width: 100%;
}

.download-btn:hover {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2) 0%, rgba(78, 205, 196, 0.2) 100%);
    transform: translateY(-5px);
}

.download-icon {
    font-size: var(--text-md);
}

.download-btn small {
    color: var(--text-muted);
}

.download-btn strong {
    font-size: var(--text-base);
}

.download-note {
    color: var(--text-muted);
    font-size: var(--text-sm);
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    border-top: 1px solid rgba(212, 175, 55, 0.2);
    padding: var(--space-5) 0 var(--space-2);
    box-shadow: 0 -4px 30px rgba(212, 175, 55, 0.15);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.footer-section h4 {
    color: var(--primary);
    margin-bottom: var(--space-2);
    font-size: var(--text-base);
}

.footer-section p {
    color: var(--text-muted);
    font-size: var(--text-sm);
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--space-1);
}

.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: var(--text-sm);
}

.footer-section a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: var(--space-2);
    font-size: var(--text-md);
}

.social-links a {
    width: var(--space-5);
    height: var(--space-5);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-links a:hover {
    border-color: var(--primary);
    background-color: rgba(212, 175, 55, 0.1);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-4);
    border-top: 1px solid rgba(212, 175, 55, 0.1);
    color: var(--text-muted);
    font-size: var(--text-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
    }

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

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: rgba(15, 15, 30, 0.98);
        border-bottom: 1px solid rgba(212, 175, 55, 0.2);
        flex-direction: column;
        gap: 0;
        padding: 0.5rem 0;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .nav-links a::after {
        display: none;
    }

    .navbar .container {
        position: relative;
    }

    .features h2,
    .gameplay h2,
    .download h2 {
        font-size: 2rem;
    }

    .download-buttons {
        flex-direction: column;
    }

    .download-btn {
        justify-content: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }


}