/* IRIS Landing — dark tech aesthetic */

:root {
    --bg: #0a0a0f;
    --bg-dark: #06060a;
    --bg-card: #12121a;
    --text: #e0e0e8;
    --text-muted: #8888a0;
    --accent: #00d4ff;
    --accent-glow: rgba(0, 212, 255, 0.15);
    --accent2: #7c3aed;
    --border: #1e1e2e;
    --radius: 12px;
    --font: 'Inter', -apple-system, sans-serif;
    --mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

html { scroll-behavior: smooth; }

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

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

/* Nav */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

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

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: 2px;
}

.logo-icon {
    font-size: 1.2em;
    margin-right: 4px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Burger */
.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.burger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}
.nav-open .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .burger span:nth-child(2) { opacity: 0; }
.nav-open .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.lang-switch {
    padding: 4px 10px !important;
    border: 1px solid var(--border) !important;
    border-radius: 6px;
    font-size: 0.8rem !important;
    font-weight: 600 !important;
    letter-spacing: 1px;
}
.lang-switch:hover {
    border-color: var(--accent) !important;
    color: var(--accent) !important;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 22px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    font-family: var(--font);
}

.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }

.btn-primary {
    background: var(--accent);
    color: var(--bg);
}
.btn-primary:hover {
    background: #33ddff;
    box-shadow: 0 0 30px var(--accent-glow);
}

.btn-ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Hero */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    background: radial-gradient(ellipse at 50% 0%, rgba(0, 212, 255, 0.08) 0%, transparent 60%);
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 20px;
    background: var(--accent-glow);
    border: 1px solid rgba(0, 212, 255, 0.2);
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-sub {
    max-width: 680px;
    margin: 0 auto 40px;
    font-size: 1.15rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    font-family: var(--mono);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-dark {
    background: var(--bg-dark);
}

.section h2 {
    font-size: 2.4rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-sub {
    text-align: center;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 48px;
    font-size: 1.05rem;
}

/* Grid */
.grid {
    display: grid;
    gap: 24px;
    margin-top: 48px;
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-5 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: border-color 0.2s;
}

.card:hover { border-color: rgba(0, 212, 255, 0.3); }

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.card h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

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

/* Features */
.feature {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: border-color 0.2s;
}

.feature:hover { border-color: rgba(0, 212, 255, 0.3); }

.feature-tag {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    background: var(--accent-glow);
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.feature h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

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

/* Category cards */
.cat-card {
    text-align: center;
    padding: 24px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.2s, transform 0.2s;
}

.cat-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-4px);
}

.cat-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.cat-card h4 {
    color: var(--accent);
    margin-bottom: 8px;
    font-size: 1rem;
}

.cat-card p {
    color: var(--text-muted);
    font-size: 0.82rem;
    line-height: 1.5;
}

/* Hardware layout */
.hw-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-top: 48px;
    flex-wrap: wrap;
}

.hw-module {
    flex: 1;
    min-width: 300px;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
}

.hw-module h3 {
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: 4px;
}

.hw-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.hw-ascii pre {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--accent);
    line-height: 1.4;
    margin-bottom: 16px;
    overflow-x: auto;
}

.hw-specs {
    list-style: none;
    padding: 0;
}

.hw-specs li {
    padding: 6px 0;
    border-top: 1px solid var(--border);
    font-size: 0.88rem;
    color: var(--text-muted);
}

.hw-specs li::before {
    content: "→ ";
    color: var(--accent);
}

.hw-cable {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: center;
    min-width: 80px;
}

.cable-line {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent), transparent);
}

/* Steps */
.steps {
    display: flex;
    gap: 32px;
    margin-top: 48px;
    flex-wrap: wrap;
    justify-content: center;
}

.step {
    flex: 1;
    min-width: 260px;
    max-width: 340px;
    text-align: center;
}

.step-num {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent-glow);
    border: 2px solid var(--accent);
    color: var(--accent);
    font-size: 1.4rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-family: var(--mono);
}

.step h3 {
    margin-bottom: 8px;
    font-size: 1.2rem;
}

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

/* Table */
.modes-table {
    margin-top: 48px;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th, td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

td code {
    font-family: var(--mono);
    font-size: 0.82rem;
    color: var(--accent);
    background: var(--accent-glow);
    padding: 2px 8px;
    border-radius: 4px;
}

.highlight {
    color: var(--accent);
    font-weight: 600;
}

/* Terminal output */
.output-example {
    max-width: 700px;
    margin: 48px auto 0;
}

.terminal {
    background: #0d0d14;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    font-family: var(--mono);
    font-size: 0.82rem;
    line-height: 1.6;
    color: #a0a0b8;
    overflow-x: auto;
    white-space: pre;
}

/* CTA */
.section-cta {
    background: linear-gradient(180deg, var(--bg) 0%, #0d1520 100%);
    text-align: center;
    padding: 100px 0 120px;
}

.waitlist-form {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin: 32px auto 0;
    max-width: 480px;
}

.waitlist-form input {
    flex: 1;
    padding: 14px 18px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text);
    font-family: var(--font);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.waitlist-form input:focus {
    border-color: var(--accent);
}

.waitlist-form input::placeholder {
    color: var(--text-muted);
}

.waitlist-note {
    margin-top: 12px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.success-msg {
    margin-top: 20px;
    padding: 16px 24px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 8px;
    color: var(--accent);
    font-weight: 500;
}

/* Footer */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-brand {
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 2px;
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0;
    margin-left: 12px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.footer-copy {
    width: 100%;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 16px;
}

/* Mobile */
@media (max-width: 768px) {
    .burger { display: flex; }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 10, 15, 0.95);
        backdrop-filter: blur(20px);
        padding: 16px 24px 24px;
        gap: 0;
        border-bottom: 1px solid var(--border);
    }
    .nav-open .nav-links { display: flex; }
    .nav-links a {
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
        font-size: 1rem;
    }
    .nav-links a:last-child { border-bottom: none; }
    .nav-links .btn-sm {
        margin-top: 8px;
        text-align: center;
    }

    .hero { padding: 120px 0 60px; }
    .hero h1 { font-size: 2.2rem; }
    .hero-stats { gap: 24px; }
    .hero-cta { flex-direction: column; align-items: center; }

    .section { padding: 64px 0; }
    .section h2 { font-size: 1.8rem; }

    .hw-layout { flex-direction: column; }
    .hw-module { min-width: unset; max-width: 100%; }
    .hw-cable { flex-direction: row; }
    .cable-line { width: 40px; height: 2px; }
    .hw-ascii pre { font-size: 0.6rem; }

    .waitlist-form { flex-direction: column; }
    .grid-5 { grid-template-columns: repeat(2, 1fr); }
    .steps { flex-direction: column; align-items: center; }
    .step { max-width: 100%; }
    .footer-inner { flex-direction: column; text-align: center; }

    /* Table scroll on mobile */
    .modes-table { -webkit-overflow-scrolling: touch; }
    table { min-width: 600px; }

    /* Terminal scroll */
    .terminal { font-size: 0.7rem; }
}