/* ==========================================================================
   Hardenwing OS - Base Styles & Variables
   ========================================================================== */

   :root {
    /* Color Palette - Metal, Armor, Dark Gray, Trustworthy */
    --bg-main: #0a0b0e;
    --bg-secondary: #12141a;
    --bg-glass: rgba(20, 22, 28, 0.7);
    --border-glass: rgba(168, 178, 193, 0.1);
    
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    
    /* Metallic & Dragon Accents */
    --accent-metal: #a8b2c1;
    --accent-steel: #4f5d75;
    --accent-dragon: #c92a2a; /* Subdued dragon fire red */
    --accent-glow: rgba(201, 42, 42, 0.3);
    
    /* Typography */
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    
    /* Effects */
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --shadow-glow: 0 0 20px var(--accent-glow);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    /* Subtle background texture for the "metal" feel */
    background-image: radial-gradient(circle at 50% 0%, #1a1d24 0%, #0a0b0e 80%);
    background-attachment: fixed;
}

a {
    text-decoration: none;
    color: var(--accent-metal);
    transition: var(--transition-smooth);
}

a:hover {
    color: var(--text-main);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.text-center {
    text-align: center;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2.5rem;
}

h2 span {
    color: var(--text-main);
    background: linear-gradient(90deg, var(--accent-metal), var(--accent-steel));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================================================
   UI Components
   ========================================================================== */
.glass-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    box-shadow: var(--shadow-glass);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    font-family: var(--font-heading);
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-steel) 0%, #2a3441 100%);
    color: var(--text-main);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-dragon) 0%, #8b0000 100%);
    border-color: var(--accent-dragon);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: rgba(168, 178, 193, 0.1);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-massive {
    padding: 1.2rem 2.5rem;
    font-size: 1.2rem;
    border-radius: 8px;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-glass);
    padding: 0.75rem 0;
    box-shadow: var(--shadow-glass);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo {
    height: 40px;
    width: auto;
    filter: drop-shadow(0 0 5px rgba(255,255,255,0.2));
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--text-main);
    letter-spacing: 1px;
    text-transform: uppercase;
}

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

.nav-link {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--accent-dragon);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--text-main);
}

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

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
}

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 80% 20%, rgba(79, 93, 117, 0.15) 0%, transparent 50%);
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 4rem;
    margin-bottom: 0.5rem;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: -1px;
}

.hero-text h2 {
    font-size: 2rem;
    color: var(--accent-metal);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-text p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image-wrapper {
    position: relative;
    perspective: 1000px;
}

.armor-frame {
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(0,0,0,0.5) 100%);
    padding: 10px;
    border-radius: 12px;
    border: 1px solid var(--border-glass);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    transform: rotateY(-10deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.armor-frame:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.hero-image {
    width: 100%;
    height: auto;
    border-radius: 6px;
    display: block;
}

/* Glitch effect for title */
.glitch {
    position: relative;
}

.glitch::before, .glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.8;
}

.glitch::before {
    left: 2px;
    text-shadow: -2px 0 var(--accent-dragon);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim 5s infinite linear alternate-reverse;
}

.glitch::after {
    left: -2px;
    text-shadow: -2px 0 var(--accent-steel);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim2 5s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
    0% { clip: rect(13px, 9999px, 86px, 0); }
    5% { clip: rect(61px, 9999px, 12px, 0); }
    10% { clip: rect(89px, 9999px, 5px, 0); }
    15% { clip: rect(2px, 9999px, 49px, 0); }
    20% { clip: rect(38px, 9999px, 63px, 0); }
    25% { clip: rect(97px, 9999px, 73px, 0); }
    30% { clip: rect(15px, 9999px, 20px, 0); }
    35% { clip: rect(54px, 9999px, 92px, 0); }
    40% { clip: rect(72px, 9999px, 8px, 0); }
    45% { clip: rect(41px, 9999px, 98px, 0); }
    50% { clip: rect(81px, 9999px, 25px, 0); }
    55% { clip: rect(6px, 9999px, 70px, 0); }
    60% { clip: rect(93px, 9999px, 53px, 0); }
    65% { clip: rect(22px, 9999px, 39px, 0); }
    70% { clip: rect(55px, 9999px, 81px, 0); }
    75% { clip: rect(88px, 9999px, 16px, 0); }
    80% { clip: rect(33px, 9999px, 68px, 0); }
    85% { clip: rect(76px, 9999px, 42px, 0); }
    90% { clip: rect(12px, 9999px, 85px, 0); }
    95% { clip: rect(48px, 9999px, 29px, 0); }
    100% { clip: rect(91px, 9999px, 57px, 0); }
}

@keyframes glitch-anim2 {
    0% { clip: rect(65px, 9999px, 100px, 0); }
    5% { clip: rect(52px, 9999px, 74px, 0); }
    10% { clip: rect(79px, 9999px, 85px, 0); }
    15% { clip: rect(75px, 9999px, 5px, 0); }
    20% { clip: rect(67px, 9999px, 61px, 0); }
    25% { clip: rect(14px, 9999px, 79px, 0); }
    30% { clip: rect(1px, 9999px, 66px, 0); }
    35% { clip: rect(86px, 9999px, 30px, 0); }
    40% { clip: rect(77px, 9999px, 50px, 0); }
    45% { clip: rect(24px, 9999px, 17px, 0); }
    50% { clip: rect(4px, 9999px, 89px, 0); }
    55% { clip: rect(56px, 9999px, 12px, 0); }
    60% { clip: rect(99px, 9999px, 42px, 0); }
    65% { clip: rect(33px, 9999px, 22px, 0); }
    70% { clip: rect(11px, 9999px, 98px, 0); }
    75% { clip: rect(48px, 9999px, 8px, 0); }
    80% { clip: rect(83px, 9999px, 34px, 0); }
    85% { clip: rect(20px, 9999px, 71px, 0); }
    90% { clip: rect(60px, 9999px, 55px, 0); }
    95% { clip: rect(39px, 9999px, 92px, 0); }
    100% { clip: rect(90px, 9999px, 45px, 0); }
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about {
    padding: 6rem 0;
    position: relative;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.about-card {
    background: var(--bg-secondary);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-glass);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-steel), var(--accent-metal));
    opacity: 0;
    transition: var(--transition-smooth);
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    background: var(--bg-glass);
}

.about-card:hover::before {
    opacity: 1;
    background: linear-gradient(90deg, var(--accent-dragon), #ff4d4d);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--accent-metal);
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
}

.about-card:hover .card-icon {
    color: var(--accent-dragon);
}

.about-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

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

/* ==========================================================================
   Features Section
   ========================================================================== */
.features {
    padding: 6rem 0;
    background: rgba(18, 20, 26, 0.5);
    border-top: 1px solid var(--border-glass);
    border-bottom: 1px solid var(--border-glass);
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--bg-glass);
    border-radius: 8px;
    border: 1px solid var(--border-glass);
    font-weight: 500;
    transition: var(--transition-smooth);
}

.feature-item:hover {
    background: rgba(255,255,255,0.05);
    transform: translateX(5px);
    border-color: var(--accent-steel);
}

.feature-item i {
    color: #4ade80; /* Success green for checkmarks */
}

/* ==========================================================================
   Releases Section
   ========================================================================== */
.releases {
    padding: 6rem 0;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 20px;
    width: 2px;
    background: var(--accent-steel);
    opacity: 0.3;
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 3rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 14px;
    top: 24px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent-metal);
    border: 3px solid var(--bg-main);
    z-index: 2;
    transition: var(--transition-smooth);
}

.timeline-item.active .timeline-dot {
    background: var(--accent-dragon);
    box-shadow: 0 0 10px var(--accent-dragon);
}

.timeline-content {
    padding: 2rem;
    position: relative;
}

.timeline-content::after {
    content: '';
    position: absolute;
    top: 24px;
    left: -10px;
    border-width: 10px 10px 10px 0;
    border-style: solid;
    border-color: transparent var(--border-glass) transparent transparent;
}

.release-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.release-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.badge {
    font-size: 0.7rem;
    text-transform: uppercase;
    background: var(--accent-dragon);
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-family: var(--font-main);
    letter-spacing: 1px;
}

.release-date {
    color: var(--accent-metal);
    font-size: 0.9rem;
    font-weight: 600;
}

.release-notes {
    list-style: none;
}

.release-notes li {
    margin-bottom: 0.75rem;
    color: var(--text-muted);
    position: relative;
    padding-left: 1.5rem;
}

.release-notes li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-steel);
}

.release-notes ul {
    margin-top: 0.5rem;
    margin-bottom: 1rem;
    list-style: none;
}

.release-notes ul li::before {
    content: '-';
    color: var(--accent-metal);
}

.release-notes strong {
    color: var(--text-main);
}

.release-notes code {
    background: rgba(0,0,0,0.5);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
    color: var(--accent-metal);
    border: 1px solid var(--border-glass);
}

/* ==========================================================================
   Docs Section
   ========================================================================== */
.docs {
    padding: 6rem 0;
    background: rgba(18, 20, 26, 0.5);
    border-top: 1px solid var(--border-glass);
}

.docs-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.doc-card {
    padding: 2.5rem 1.5rem;
    display: block;
    color: var(--text-main);
}

.doc-card i {
    font-size: 2.5rem;
    color: var(--accent-steel);
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
}

.doc-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-metal);
}

.doc-card:hover i {
    color: var(--text-main);
}

.doc-card h4 {
    margin-bottom: 0.75rem;
}

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

/* ==========================================================================
   Download Section
   ========================================================================== */
.download {
    padding: 6rem 0;
}

.download-panel {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, rgba(20,22,28,0.8) 0%, rgba(10,11,14,0.9) 100%);
    border: 1px solid rgba(168, 178, 193, 0.2);
}

.download-panel h2 {
    margin-bottom: 1rem;
}

.download-panel p {
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
}

.checksum {
    margin-top: 1.5rem;
    font-size: 0.85rem !important;
    color: var(--accent-metal) !important;
    opacity: 0.8;
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    background: #050608;
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-glass);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-logo img {
    height: 30px;
    filter: grayscale(100%) opacity(0.7);
    transition: var(--transition-smooth);
}

.footer-logo:hover img {
    filter: grayscale(0%) opacity(1);
}

.footer-logo span {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 1px;
}

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

.footer-links a {
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.copyright {
    color: #4f5d75;
    font-size: 0.9rem;
    margin-top: 1rem;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text p {
        margin: 0 auto 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .armor-frame {
        max-width: 600px;
        margin: 0 auto;
        transform: none;
    }
    
    .armor-frame:hover {
        transform: translateY(-10px);
    }
}

@media (max-width: 768px) {
    .nav-links, .nav-cta {
        display: none;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    h1 {
        font-size: 3rem !important;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero {
        padding-top: 120px;
    }
    
    .timeline::before {
        left: 0;
    }
    
    .timeline-item {
        padding-left: 30px;
    }
    
    .timeline-dot {
        left: -6px;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }
    
    .release-header {
        flex-direction: column;
        align-items: flex-start;
    }
}