/* ============================
   PROMPT APK — BRANDING SITE
   Design System & Styles
   ============================ */

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg-primary: #050510;
    --bg-secondary: #0a0a1f;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(139, 92, 246, 0.3);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #8b5cf6;
    --accent-light: #a78bfa;
    --accent-dark: #6d28d9;
    --cyan: #06b6d4;
    --pink: #ec4899;
    --orange: #f97316;
    --green: #22c55e;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --font-primary: 'Inter', -apple-system, sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
}

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.section-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================
   NAVIGATION
   ============================ */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(5, 5, 16, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}

#navbar.scrolled {
    background: rgba(5, 5, 16, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
}

.logo-icon {
    font-size: 24px;
    filter: drop-shadow(0 0 8px rgba(139, 92, 246, 0.6));
}

.logo-accent { color: var(--accent); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s;
    letter-spacing: 0.3px;
}

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

.nav-actions { display: flex; align-items: center; gap: 16px; }

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--accent);
    color: #fff;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: var(--accent-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ============================
   HERO SECTION
   ============================ */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
}

.hero-orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent-dark);
    top: -200px;
    right: -100px;
    animation: orbFloat 8s ease-in-out infinite;
}

.hero-orb-2 {
    width: 400px;
    height: 400px;
    background: var(--cyan);
    bottom: -100px;
    left: -100px;
    animation: orbFloat 10s ease-in-out infinite reverse;
}

.hero-orb-3 {
    width: 300px;
    height: 300px;
    background: var(--pink);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.15;
    animation: orbFloat 12s ease-in-out infinite;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 20%, transparent 70%);
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(30px, -20px); }
    66% { transform: translate(-20px, 15px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent-light);
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease forwards;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(40px, 7vw, 80px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -2px;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s forwards;
    opacity: 0;
}

.hero-gradient {
    background: linear-gradient(135deg, var(--accent-light) 0%, var(--cyan) 50%, var(--pink) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient {
    background: linear-gradient(135deg, var(--accent-light), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 40px;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-ctas {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease 0.3s forwards;
    opacity: 0;
}

.cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff;
    border-radius: 14px;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

.cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(139, 92, 246, 0.5);
}

.cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 14px;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.stat { text-align: center; }

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

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

/* ============================
   SECTIONS COMMON
   ============================ */
#features, #prompts, #blog, #download {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 16px;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -1px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-top: 16px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================
   FEATURES GRID
   ============================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: all 0.4s ease;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.15);
    color: var(--cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon.icon-purple { background: rgba(139, 92, 246, 0.1); border-color: rgba(139, 92, 246, 0.15); color: var(--accent); }
.feature-icon.icon-cyan { background: rgba(6, 182, 212, 0.1); border-color: rgba(6, 182, 212, 0.15); color: var(--cyan); }
.feature-icon.icon-orange { background: rgba(249, 115, 22, 0.1); border-color: rgba(249, 115, 22, 0.15); color: var(--orange); }
.feature-icon.icon-green { background: rgba(34, 197, 94, 0.1); border-color: rgba(34, 197, 94, 0.15); color: var(--green); }
.feature-icon.icon-pink { background: rgba(236, 72, 153, 0.1); border-color: rgba(236, 72, 153, 0.15); color: var(--pink); }

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ============================
   PROMPT CARDS (App-Style)
   ============================ */
#prompts {
    background: var(--bg-secondary);
}

.prompt-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.prompt-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s ease;
    position: relative;
}

.prompt-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(139, 92, 246, 0.15);
}

.prompt-card-img-wrap {
    position: relative;
    aspect-ratio: 3 / 4;
    overflow: hidden;
}

.prompt-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.prompt-card:hover .prompt-card-img {
    transform: scale(1.05);
}

.prompt-card-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 11px;
    font-weight: 600;
    color: #fff;
    opacity: 0;
    transform: translateY(-4px);
    transition: all 0.3s ease;
    z-index: 3;
}

.prompt-card:hover .prompt-card-badge {
    opacity: 1;
    transform: translateY(0);
}

.prompt-card-body {
    padding: 16px 18px 18px;
}

.prompt-card-text {
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-family: 'SF Mono', 'Fira Code', monospace;
    background: rgba(255, 255, 255, 0.02);
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.prompt-card-footer {
    margin-top: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.prompt-card-link {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-light);
    transition: gap 0.2s;
}

.prompt-card-link:hover { color: var(--accent); }

.prompt-cta {
    text-align: center;
    margin-top: 48px;
}

.prompt-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.prompt-empty p { margin-bottom: 20px; }

/* Toast notification for copy */
.copy-toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--accent);
    color: #fff;
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    z-index: 9999;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
    box-shadow: 0 8px 30px rgba(139, 92, 246, 0.5);
}

.copy-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ============================
   BLOG GRID
   ============================ */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    min-height: 200px;
}

.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.4s ease;
}

.blog-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.blog-card-img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.blog-card-body {
    padding: 24px;
}

.blog-card-date {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.blog-card-title {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-excerpt {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-light);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s;
}

.blog-card-link:hover { gap: 10px; }

.blog-loading {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 60px;
    color: var(--text-muted);
}

.loader {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.blog-cta {
    text-align: center;
    margin-top: 48px;
}

.cta-outline {
    display: inline-block;
    padding: 14px 32px;
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.cta-outline:hover {
    border-color: var(--accent);
    color: var(--accent-light);
    background: rgba(139, 92, 246, 0.05);
}

/* ============================
   DOWNLOAD CTA
   ============================ */
#download {
    position: relative;
    overflow: hidden;
    background: var(--bg-secondary);
}

.download-bg {
    position: absolute;
    inset: 0;
}

.download-orb {
    position: absolute;
    width: 500px;
    height: 500px;
    background: var(--accent-dark);
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.25;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.download-content {
    position: relative;
    text-align: center;
    z-index: 1;
}

.download-content h2 {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.download-content p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.download-badges {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.store-badge {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 14px 28px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.store-badge:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.badge-small {
    display: block;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.badge-big {
    display: block;
    font-size: 18px;
    font-weight: 700;
    font-family: var(--font-display);
}

/* ============================
   FOOTER
   ============================ */
#footer {
    padding: 80px 0 40px;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 16px;
    line-height: 1.7;
    max-width: 320px;
}

.footer-socials {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.footer-socials a {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.footer-socials a:hover {
    color: var(--accent);
    border-color: var(--border-hover);
}

.footer-links h4 {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: var(--text-muted);
}

.footer-links a {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    transition: color 0.2s;
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ============================
   ANIMATIONS
   ============================ */
[data-animate] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-animate].visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================
   AD CONTAINER (Minimal)
   ============================ */
.ad-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 24px;
    text-align: center;
}

.ad-container ins {
    border-radius: 12px;
    overflow: hidden;
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 768px) {
    .nav-links { 
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(5, 5, 16, 0.98);
        backdrop-filter: blur(20px);
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
    }

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

    .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .nav-toggle.open span:nth-child(2) { opacity: 0; }
    .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    #hero { padding: 100px 20px 60px; min-height: auto; }
    .hero-title { letter-spacing: -1px; }
    .hero-ctas { flex-direction: column; width: 100%; }
    .cta-primary, .cta-secondary { width: 100%; justify-content: center; }
    .hero-stats { gap: 24px; }
    .stat-number { font-size: 22px; }

    .features-grid, .prompt-grid, .blog-grid { grid-template-columns: 1fr; }
    
    #features, #prompts, #blog, #download { padding: 80px 0; }
    
    .footer-grid { grid-template-columns: 1fr; gap: 40px; }
    
    .download-badges { flex-direction: column; }
    .store-badge { width: 100%; justify-content: center; }
}