/* Custom Stylesheet for AntiCetus Landing Page */

:root {
    --color-bg: #020b14;
    --color-bg-gradient: radial-gradient(circle at top, #082946 0%, #020b14 100%);
    --color-text-primary: #ffffff;
    --color-text-secondary: #a3c7eb;
    --color-accent-cyan: #00e5ff;
    --color-accent-gold: #ffd700;
    --color-glass-bg: rgba(6, 29, 52, 0.55);
    --color-glass-border: rgba(0, 229, 255, 0.15);
    --font-primary: 'Outfit', sans-serif;
    --font-retro: 'Press Start 2P', cursive;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Header & Navigation */
.header {
    width: 100%;
    background: rgba(2, 11, 20, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-image-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.header-logo-icon {
    height: 38px;
    width: auto;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.25);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.header-logo-icon:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.55);
}

.header-logo-text {
    font-family: var(--font-retro);
    font-size: 1rem;
    color: var(--color-accent-gold);
    margin-left: 12px;
    letter-spacing: -0.5px;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

.logo-image-link:hover .header-logo-text {
    color: var(--color-accent-cyan);
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
}

/* Accessible hidden text class for SEO indexing and screen readers */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

.nav-link:hover {
    color: var(--color-accent-cyan);
    text-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    padding: 140px 20px 80px 20px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(2, 11, 20, 0) 50%, rgba(2, 11, 20, 0.95) 100%);
    pointer-events: none;
}

.hero-container {
    max-width: 800px;
    margin: 0 auto;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-badge {
    font-family: var(--font-retro);
    font-size: 0.75rem;
    color: var(--color-accent-gold);
    border: 1px solid var(--color-accent-gold);
    padding: 6px 12px;
    border-radius: 4px;
    margin-bottom: 30px;
    letter-spacing: 2px;
    display: inline-block;
    box-shadow: 0 0 8px rgba(255, 215, 0, 0.2);
}

.hero-title-container {
    max-width: 600px;
    width: 100%;
    margin-bottom: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-title-img {
    width: 100%;
    height: auto;
    border-radius: 18px;
    box-shadow: 0 15px 40px rgba(0, 229, 255, 0.25), 0 0 60px rgba(2, 11, 20, 0.85);
    border: 1px solid rgba(0, 229, 255, 0.2);
    transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

.hero-title-img:hover {
    border-color: var(--color-accent-cyan);
    box-shadow: 0 20px 50px rgba(0, 229, 255, 0.4);
    transform: scale(1.02);
}

.hero-tagline {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    font-weight: 400;
}

.hero-cta-container {
    display: flex;
    justify-content: center;
}

/* Custom Play Store CTA Button */
.btn-playstore {
    background-color: #000000;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #ffffff;
    display: flex;
    align-items: center;
    padding: 12px 28px;
    border-radius: 12px;
    text-decoration: none;
    transition: transform 0.2s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.btn-playstore:hover {
    transform: translateY(-3px);
    border-color: var(--color-accent-cyan);
    box-shadow: 0 10px 20px rgba(0, 229, 255, 0.2);
}

.playstore-icon {
    width: 24px;
    height: 24px;
    margin-right: 14px;
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.btn-subtext {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: #aaaaaa;
}

.btn-maintext {
    font-size: 1.15rem;
    font-weight: 600;
}

/* Features Section */
.features {
    padding: 100px 20px;
    position: relative;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-retro);
    font-size: 1.8rem;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    letter-spacing: -1px;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--color-accent-cyan);
    margin: 15px auto 0 auto;
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.8);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    backdrop-filter: blur(12px);
    border-radius: 20px;
    padding: 40px 30px;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s ease, box-shadow 0.3s ease;
    text-align: left;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent-cyan);
    box-shadow: 0 15px 30px rgba(0, 229, 255, 0.15);
}

.feature-icon {
    font-size: 2.2rem;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.4));
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* Media section elements styled as hero title above */

/* Footer styling */
.footer {
    background-color: #01060c;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 40px 20px;
    color: #627b94;
    font-size: 0.9rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links a {
    color: #627b94;
    text-decoration: none;
    margin-left: 20px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--color-accent-cyan);
}

/* Keyframe Animations */
@keyframes iconFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

/* Media Queries for Responsiveness */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
    }
    .hero-title-container {
        max-width: 90%;
    }
    .hero-tagline {
        font-size: 1.05rem;
    }
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
    .footer-links a {
        margin: 0 10px;
    }
}