:root {
    /* Soft Industrial Palette - Comfortable yet Technical */
    --bg:      oklch(94% 0.008 250); 
    --surface: #F0F2F5;
    --fg:      oklch(15% 0.02 250); 
    --muted:   oklch(50% 0.02 250);
    --border:  oklch(90% 0.01 250);
    --accent:  #FF5722; 
    --accent-soft: rgba(255, 87, 34, 0.15);

    --font-display: 'Plus Jakarta Sans', sans-serif;
    --font-body:    'Inter', sans-serif;
    --font-mono:    'JetBrains Mono', ui-monospace, monospace;
    
    --max-width: 90%;
    --radius-lg: 32px;
    --radius-md: 12px;
}

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

html {
    scroll-behavior: smooth;
}

#about {
    scroll-margin-top: 100px;
}

#tech {
    scroll-margin-top: 75px;
}

body {
    background-color: var(--bg);
    color: var(--fg);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.04em;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 5vw;
}

/* Helper for Favicon */
.brand-icon {
    height: 0.9em;
    vertical-align: middle;
    margin-right: 8px;
    display: inline-block;
    transform: translateY(-2px);
}

/* Navigation */
header {
    padding: 3vh 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    background: rgba(240, 242, 245, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.wordmark {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--fg);
    text-transform: uppercase;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 40px;
    align-items: center;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-links a { color: var(--fg); text-decoration: none; opacity: 0.7; transition: opacity 0.2s; }
.nav-links a:hover { opacity: 1; color: var(--accent); }

.github-icon {
    width: 22px;
    height: 22px;
    fill: var(--fg);
    transition: transform 0.2s ease;
}
.github-icon:hover { transform: scale(1.1); fill: var(--accent); }

/* Problem Section / Hero */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 15vh 0 10vh;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4vw;
    align-items: flex-start;
}

.hero-content h1 {
    font-size: clamp(3rem, 5vw, 4.5rem);
    margin-bottom: 20px;
    line-height: 1.05;
    letter-spacing: -0.05em;
    max-width: 900px;
    text-wrap: balance;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--fg);
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 1.05rem;
    color: var(--muted);
    margin-bottom: 32px;
    max-width: 90%;
    font-weight: 500;
}

.hero-terminal-pills {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

.terminal-pill {
    flex: 1;
    background: rgba(240, 242, 245, 0.5);
    border: 1px solid var(--border);
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--fg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.hero-buttons {
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-value {
    color: var(--accent);
    font-size: 1.5rem;
    font-weight: 800;
    font-family: var(--font-display);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--muted);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0,0,0,0.08);
    border: 1px solid rgba(240, 242, 245, 0.8);
    background: var(--surface);
    padding: 16px;
}

.hero-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: calc(var(--radius-lg) - 8px);
}

/* Section 2: HexySAR & Key Features */
.mission {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8vh 4vw;
    background: var(--surface);
    border-radius: var(--radius-lg);
    margin: 5vh 0;
}

.split-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5vw;
    align-items: center;
}

.mission h2 { font-size: 3.5rem; margin-bottom: 24px; letter-spacing: -0.04em; }
.mission p { font-size: 1.2rem; color: var(--muted); font-weight: 500; margin-bottom: 32px; }

.btn-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    background: var(--accent);
    color: var(--surface);
    padding: 16px 36px;
    border-radius: 100px;
    font-weight: 800;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    box-shadow: 0 10px 25px var(--accent-soft);
    border: 2px solid var(--accent);
}
.btn-primary:hover { 
    transform: translateY(-4px); 
    box-shadow: 0 15px 35px var(--accent-soft);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    background: #ffffff;
    color: var(--fg);
    padding: 16px 36px;
    border-radius: 100px;
    font-weight: 800;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    border: 2px solid #ffffff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.03);
    gap: 12px;
}
.btn-secondary:hover {
    transform: translateY(-4px); 
    box-shadow: 0 15px 35px rgba(0,0,0,0.08);
}

.hf-icon {
    width: 20px;
    height: 20px;
}

.mission-image {
    width: 100%;
    height: 500px;
    background: var(--bg);
    border-radius: var(--radius-lg);
    background-image: url('mozhm15m-image.png');
    background-size: cover;
    background-position: center;
    border: 1px solid var(--border);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2vw;
    margin-top: 40px;
}

/* How it Operates */
.operates {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 12vh 0;
    text-align: center;
}

.operates h2 {
    font-size: 3.5rem;
    margin-bottom: 60px;
}

.steps-container {
    display: flex;
    justify-content: space-between;
    gap: 2vw;
    text-align: left;
    margin-top: 40px;
}

.step-box {
    flex: 1;
    background: var(--surface);
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.step-num {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    display: block;
}

/* Tech Stack */
.tech {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8vh 4vw;
    background: var(--surface);
    border-radius: var(--radius-lg);
    margin-bottom: 5vh;
}

.tech-lists {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4vw;
    margin-top: 40px;
}

.tech-item {
    padding-bottom: 16px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
}
.tech-item h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}
.tech-item p {
    color: var(--muted);
    font-size: 0.95rem;
}

/* Setup (Terminal) */
.setup {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 12vh 0 15vh;
}

.terminal {
    background: #fafafa;
    color: #333;
    padding: 24px 32px 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    line-height: 1.8;
    margin-top: 40px;
}

.terminal-header {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.t-prompt { color: #27c93f; font-weight: 700; margin-right: 8px; }
.t-cmd { color: #111; font-weight: 500; }
.t-accent { color: var(--accent); font-weight: 700; }
.t-comment { color: #888; }
.t-title { color: #888; font-size: 0.75rem; font-weight: 600; margin-left: 16px; }

/* Setup Download Banner */
.download-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--surface);
    padding: 32px 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    margin-top: 16px;
    margin-bottom: 0px;
}

.download-text h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

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

@media (max-width: 768px) {
    .download-banner {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
    }
}

/* Footer */
footer {
    padding: 60px 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
}

.footer-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 48px;
}

.footer-links a {
    color: var(--fg);
    font-weight: 800;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
}

.copyright {
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
}

@media (max-width: 1024px) {
    .hero h1, .mission h2, .operates h2 { font-size: 3rem; }
    .features, .split-grid, .grid-2, .tech-lists, .steps-container { grid-template-columns: 1fr; flex-direction: column; gap: 40px; }
    .nav-links { display: none; }
    .mission-image { height: 400px; aspect-ratio: auto; }
}