:root {
    /* Color Palette */
    --bg-dark: #09090b;
    --bg-card: rgba(24, 24, 27, 0.7);
    --bg-header: rgba(9, 9, 11, 0.85);
    
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-gradient: linear-gradient(135deg, #3b82f6, #8b5cf6);
    
    --border-color: rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-sans: 'Inter', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100vw;
    height: 100vh;
    background-image: url('../assets/images/digital_graffiti_logo_v13_1783362381443.png');
    background-size: 100% auto;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.05;
    z-index: -2;
    pointer-events: none;
}

html {
    scroll-behavior: smooth;
}

/* Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.highlight {
    position: relative;
    color: #DAE114; /* Exact neon yellow-green matching the graffiti */
    font-family: 'Caveat', cursive;
    font-size: 1.3em;
    font-weight: 700;
    display: inline-block;
    transform: rotate(-5deg);
    text-shadow: 0 0 10px rgba(218, 225, 20, 0.4);
}

.highlight::after {
    content: '';
    position: absolute;
    left: -5%;
    bottom: 0px;
    width: 110%;
    height: 12px;
    border-bottom: 4px solid #DAE114;
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(218, 225, 20, 0.4);
    transform: rotate(-2deg);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    font-size: 1rem;
    text-align: center;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-header);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: transform var(--transition-normal);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-link {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 40px;
    width: auto;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-item {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-item:hover {
    color: var(--text-primary);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 80vw;
    height: 80vw;
    max-width: 800px;
    max-height: 800px;
    background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, rgba(9,9,11,0) 70%);
    z-index: -1;
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Apps Section */
.apps-section {
    padding: 6rem 0;
    background-color: var(--bg-dark);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.app-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.2);
}

.placeholder-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-icon::after {
    content: "APP";
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.app-title {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.app-desc {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.platforms {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.platform-badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: var(--text-secondary);
}

.btn-download {
    width: 100%;
}

/* Featured App Section */
.featured-app {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 3rem;
    backdrop-filter: blur(10px);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    display: flex;
    flex-direction: column;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 768px) {
    .featured-app {
        flex-direction: row;
    }
}

.featured-app:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.2);
}

.featured-app-icon {
    flex-shrink: 0;
    width: 200px;
    height: 200px;
    border-radius: 32px;
    background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.app-icon-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.featured-app-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.featured-app-content .app-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.featured-app-content .app-desc {
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

/* About & Contact Sections */
.about-section, .contact-section {
    padding: 6rem 0;
    background-color: var(--bg-dark);
}

.about-content, .contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
    backdrop-filter: blur(10px);
}

.about-content p, .contact-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.about-content p:last-child, .contact-content p:last-child {
    margin-bottom: 0;
}

.contact-content .btn {
    margin-top: 1.5rem;
}

/* Footer */
.footer {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
    background: rgba(0,0,0,0.2);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.5rem;
}

.footer-img {
    height: 32px;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.footer-img:hover {
    opacity: 1;
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }

/* Responsive */
@media (max-width: 768px) {
    .nav-list {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
}