/* Ummidi Design System — public/css/app.css
   Layered stylesheet: Tokens → Reset → Base → Layout → Components → Utilities → Responsive.
   Terminal Industrial / High-Contrast Precision. */

/* ── 1. Design Tokens ────────────────────────────────── */

:root {
    /* Color — surface & canvas */
    --canvas: #000000;
    --canvas-alt: #0a0a0a;
    --canvas-raised: #131316; /* cards raised on canvas — no border needed */
    --ink: #ffffff;
    --muted: #a0a0a8;
    --hairline: #3a3a3f;
    --primary: #ffffff;
    --on-primary: #000000;
    --color-cool: #f0f0fa; /* cool tinted surface (btn-filled-cool) */

    /* Color — semantic status */
    --color-success: #16a34a;
    --color-warning: #b66c00;
    --color-danger: #dc2626;

    /* Traffic lights (macOS window controls) */
    --color-traffic-red: #ff5f57;
    --color-traffic-yellow: #febc2e;
    --color-traffic-green: #28c840;
    --color-silver: #aaaaaa;
    --color-disabled: var(--hairline);
    --color-avatar-fill: rgba(0, 0, 0, 0.06);
    --color-accent-soft: rgba(255, 255, 255, 0.10);
    --color-chip-bg: rgba(255, 255, 255, 0.06);

    /* Type families */
    --font-display: 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: ui-monospace, Menlo, Monaco, monospace;

    /* Type scale — minor third, ratio 1.200, base 1rem = 16px
       (px values for reference; weights/leading per design system) */
    --type-display-xxl: 2.986rem;  /* 47.8 / 800 / 1.12 / 1.6px    */
    --type-display-lg: 2.488rem;   /* 39.8 / 700 / 1.12 / -0.8px   */
    --type-display-md: 2.074rem;   /* 33.2 / 700 / 1.25 / -0.258px */
    --type-heading-lg: 1.728rem;   /* 27.6 / 700 / 1.33             */
    --type-body-lg: 1.200rem;      /* 19.2 / 400 / 1.55             */
    --type-body-md: 1rem;          /* 16   / 400 / 1.55             */
    --type-caption: 0.833rem;      /* 13.3 / 400 / 1.43             */
    --type-button-md: 0.833rem;    /* 13.3 / 700 / 1.38 / 0.2px     */
    --type-micro-cap: 0.694rem;    /* 11.1 / 700 / 1    / 0.96px    */

    /* Spacing (8px base, denser sub-units for fine vertical rhythm) */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-xxl: 32px;
    --spacing-huge: 64px;

    /* Border radius scale — inputs to pill buttons */
    --rad-sm: 4px;
    --rad-md: 8px;
    --rad-lg: 12px;
    --rad-xl: 16px;
    --rad-button: 32px;
    --rad-full: 9999px; /* utility for pills/dots — outside the scale */

    /* Glass — frosted translucent surfaces (header, overlays) */
    --glass-bg: rgba(10, 10, 12, 0.65);
    --glass-blur: 14px;
    --glass-saturate: 140%;
    --glass-border: rgba(255, 255, 255, 0.08);

    /* Elevation — layered shadow stack (L0 flat → L3 toast) */
    --elev-l1: rgba(0, 0, 0, 0.1) 0 5px 20px 0;
    --elev-l2: rgba(0, 0, 0, 0.1) 0 0 32px 0;
    --elev-l3: rgba(0, 0, 0, 0.2) 0 1px 10px 0;

    /* Stacking */
    --z-header: 10;
}

/* ── 2. Reset ────────────────────────────────────────── */

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

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

img,
picture,
svg,
video,
canvas {
    display: block;
    max-width: 100%;
}

img {
    height: auto;
}

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}

label,
legend,
caption {
    display: block;
}

ul[role='list'],
ol[role='list'] {
    list-style: none;
}

a {
    color: inherit;
    text-decoration: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: inherit;
    font-weight: inherit;
    line-height: inherit;
}

p,
figure,
blockquote,
dl,
dd {
    margin: 0;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}

/* ── 3. Base — Fonts & Type ──────────────────────────── */

/* Self-hosted variable font, latin subset, served by LiteSpeed.
   No third-party requests. */

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
    src: url('/fonts/inter-var.woff2') format('woff2');
}

body {
    background: var(--canvas);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: var(--type-body-md);
    line-height: 1.55;
    letter-spacing: 0;
}

/* Heading hierarchy — element-level defaults */

h1 {
    font-size: var(--type-display-xxl);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: 1.6px;
    margin-bottom: var(--spacing-xl);
}

h2 {
    font-size: var(--type-heading-lg);
    font-weight: 700;
    line-height: 1.33;
    letter-spacing: 0;
}

h3 {
    font-size: var(--type-heading-lg);
    font-weight: 700;
    line-height: 1.33;
    letter-spacing: 0;
}

h4 {
    font-size: var(--type-heading-lg);
    font-weight: 700;
    line-height: 1.33;
    letter-spacing: 0;
}

h5 {
    font-size: var(--type-body-lg);
    font-weight: 700;
    line-height: 1.4;
}

h6 {
    font-size: var(--type-body-md);
    font-weight: 600;
    line-height: 1.4;
}

p {
    line-height: 1.55;
}

/* Site-specific type classes — mapped to the same scale */

.section-heading {
    font-size: var(--type-display-lg);
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -0.8px;
    margin: 0 0 var(--spacing-lg);
}

.section-sub {
    font-size: var(--type-body-lg);
    font-weight: 400;
    line-height: 1.55;
    letter-spacing: 0;
    margin: 0 0 var(--spacing-huge);
}

.section-eyebrow {
    font-family: var(--font-mono);
    font-size: var(--type-micro-cap);
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.96px;
    margin: 0 0 var(--spacing-xl);
}

.section .section-eyebrow {
    margin: 0 0 var(--spacing-md);
}

.lede {
    font-size: var(--type-body-lg);
    font-weight: 400;
    line-height: 1.55;
    letter-spacing: 0;
    margin-bottom: var(--spacing-xxl);
}

/* Code surfaces */

pre,
code {
    font-family: var(--font-mono);
}

/* ── 4. Layout ───────────────────────────────────────── */

/* Container — abstract 1280px box with fluid gutters */

.container {
    width: 100%;
    max-width: 1280px;
    margin-inline: auto;
    padding-inline: var(--spacing-huge);
}

/* Section — content container on top of .container rhythm:
   1280px box, hairline separation */

.section {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-huge) var(--spacing-huge);
    border-top: 1px solid var(--hairline);
}

.section-alt {
    background: var(--canvas-alt);
}

/* First section after the header — no separator line */

.section--first {
    border-top: 0;
}

/* Centered content variant — heading & column aligned to the middle */

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

.section--centered .section-sub {
    margin-inline: auto;
}

/* Header & Nav — sticky aero-glass shell */
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border-bottom: 1px solid var(--glass-border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    height: 64px;
}

.nav-brand {
    flex-shrink: 0;
    font-size: var(--type-body-lg);
    font-weight: 800;
    letter-spacing: 0.32px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    margin-left: auto;
    list-style: none;
}

.nav-links a {
    font-size: var(--type-caption);
    font-weight: 600;
    letter-spacing: 0.32px;
    color: var(--muted);
    transition: color 0.15s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-left: var(--spacing-xl);
    flex-shrink: 0;
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 var(--spacing-lg);
    border-radius: var(--rad-button);
    background: var(--primary);
    color: var(--on-primary);
    font-size: var(--type-button-md);
    font-weight: 700;
    letter-spacing: 0.2px;
    transition: background-color 0.15s ease;
}

.nav-cta:hover {
    background: #f2f2f2;
}

/* Hamburger — two bars morphing to X; hidden until mobile */

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    padding: 0 12px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--ink);
    border-radius: 1px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

body.nav-lock {
    overflow: hidden;
}

@keyframes navIn {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Tablet — tighten link spacing */

@media (max-width: 1023px) {
    .nav {
        gap: var(--spacing-lg);
    }

    .nav-links {
        gap: var(--spacing-lg);
    }

    /* Touch targets on tablets */
    .nav-links a,
    .nav-dropdown-summary {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
    }
}

/* Mobile — collapse to hamburger (<768) */

@media (max-width: 767px) {
    .nav-toggle {
        display: flex;
    }

    /* Group CTA + hamburger flush right */
    .nav-actions {
        margin-left: auto;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        margin-left: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
        background: var(--canvas-alt);
        border-bottom: 1px solid var(--hairline);
        box-shadow: var(--elev-l2);
        max-height: calc(100dvh - 64px);
        overflow-y: auto;
    }

    .nav-open .nav-links {
        display: flex;
        animation: navIn 0.18s ease;
    }

    .nav-links a {
        display: flex;
        align-items: center;
        min-height: 44px;
        padding: var(--spacing-md) 0;
    }

    .nav-links li + li {
        border-top: 1px solid rgba(58, 58, 63, 0.35);
    }

    .nav-open .nav-toggle span:nth-child(1) {
        transform: translateY(4px) rotate(45deg);
    }

    .nav-open .nav-toggle span:nth-child(2) {
        transform: translateY(-4px) rotate(-45deg);
    }

    .nav-toggle:hover {
        opacity: 0.7;
    }
}

/* Small phones (<480) — shorter bar */

@media (max-width: 479px) {
    .nav {
        height: 56px;
    }

    .nav-links {
        top: 56px;
        max-height: calc(100dvh - 56px);
    }
}

/* Hero — minimal centered band, compact rhythm */

.hero--min {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: calc(var(--spacing-huge) + var(--spacing-xxl)) var(--spacing-huge);
}

.hero--min::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(46% 40% at 50% 38%, rgba(255, 255, 255, 0.09), transparent 68%),
        radial-gradient(30% 26% at 72% 60%, rgba(255, 255, 255, 0.05), transparent 70%),
        radial-gradient(30% 26% at 28% 60%, rgba(255, 255, 255, 0.05), transparent 70%);
    pointer-events: none;
}

.hero--min > * {
    position: relative;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
    width: 100%;
    max-width: 880px;
    margin-inline: auto;
    text-align: center;
}

.hero-content h1 {
    margin-bottom: 0;
}

/* Terminal frame inside the hero — wide, with breathing room */

.hero-content .terminal-window {
    width: 100%;
    max-width: 760px;
    margin-inline: auto;
    margin-top: var(--spacing-huge);
}

.hero-eyebrow {
    font-family: var(--font-mono);
    font-size: var(--type-micro-cap);
    font-weight: 700;
    letter-spacing: 0.96px;
    color: var(--muted);
}

.hero-note {
    font-family: var(--font-mono);
    font-size: var(--type-micro-cap);
    font-weight: 700;
    color: var(--muted);
}

@media (max-width: 1023px) {
    .hero--min {
        padding: calc(var(--spacing-huge) + var(--spacing-xxl)) var(--spacing-xxl);
    }
}

@media (max-width: 767px) {
    .hero--min {
        padding: calc(var(--spacing-xl) + var(--spacing-xxl)) 20px;
        padding-left: max(20px, env(safe-area-inset-left));
        padding-right: max(20px, env(safe-area-inset-right));
    }

    .hero-content {
        gap: var(--spacing-lg);
    }

    .hero-content .terminal-window {
        margin-top: var(--spacing-xxl);
    }
}

@media (max-width: 479px) {
    .hero--min {
        padding: calc(var(--spacing-lg) + var(--spacing-xl)) 16px;
    }
}

/* Grid — reusable column system */

.grid {
    display: grid;
    gap: var(--spacing-xl);
}

.grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-auto {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

@media (max-width: 1023px) {
    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: var(--spacing-lg);
    }
}

@media (max-width: 767px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Footer — full-bleed, multi-column grid + utility bar */

.footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: var(--spacing-huge) 0 var(--spacing-xxl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-xxl);
}

.footer-brand {
    font-size: var(--type-body-lg);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    font-size: var(--type-caption);
    color: var(--muted);
}

.footer-col-heading {
    font-size: var(--type-micro-cap);
    font-weight: 700;
    letter-spacing: 0.96px;
    margin: 0 0 var(--spacing-lg);
    color: var(--ink);
}

.footer-col a {
    display: block;
    margin-bottom: var(--spacing-md);
    font-size: var(--type-caption);
    font-weight: 700;
    letter-spacing: 0.32px;
    color: var(--muted);
    transition: color 0.15s ease;
}

.footer-col a:hover {
    color: var(--ink);
}

.footer-utility {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--hairline);
    margin-top: var(--spacing-huge);
    padding-top: var(--spacing-xl);
}

.footer-copy {
    font-size: var(--type-caption);
    color: var(--muted);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-xl);
}

.footer-legal a {
    font-size: var(--type-caption);
    font-weight: 700;
    letter-spacing: 0.32px;
    color: var(--muted);
    transition: color 0.15s ease;
}

.footer-legal a:hover {
    color: var(--ink);
}

/* Footer responsive — co-located */

@media (max-width: 1023px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
}

@media (max-width: 767px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-utility {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
    }

    .footer-legal {
        flex-wrap: wrap;
        gap: var(--spacing-md) var(--spacing-lg);
    }

    .footer {
        padding-bottom: var(--spacing-xl);
    }
}

/* ── 5. Components ───────────────────────────────────── */

/* Buttons — pill CTAs, radius 32px, button-md tier */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    height: 48px;
    padding: 0 var(--spacing-xl);
    border: 1px solid transparent;
    border-radius: var(--rad-button);
    font-size: var(--type-button-md);
    font-weight: 700;
    line-height: 1.38;
    letter-spacing: 0.2px;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
}

.btn-primary:hover {
    background: #f2f2f2;
}

.btn-secondary {
    background: var(--canvas-alt);
    border-color: var(--hairline);
    color: var(--ink);
}

.btn-secondary:hover {
    border-color: var(--muted);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    padding: 0 calc(var(--spacing-xl) - 1px);
    color: var(--ink);
}

.btn-outline:hover {
    background: var(--color-accent-soft);
}

.btn-ghost {
    background: transparent;
    border-color: var(--primary);
    color: var(--ink);
}

.btn-ghost:hover {
    background: var(--color-accent-soft);
}

.btn-filled-cool {
    background: var(--color-cool);
    border-color: var(--color-cool);
    color: var(--on-primary);
}

.btn-filled-cool:hover {
    background: #e6e6f6;
    border-color: #e6e6f6;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Inverted CTA — black pill on inverted/light surfaces */

.btn-inverted {
    background: var(--on-primary);
    border-color: var(--on-primary);
    color: var(--primary);
}

.btn-inverted:hover {
    background: #1a1a1e;
}

/* CTA stack — pill + note vertical rhythm */

.cta-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

/* Copy pill — inline shell command with copy button */

.copy-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-xs) var(--spacing-xs) var(--spacing-lg);
    background: var(--canvas-alt);
    border: 1px solid var(--hairline);
    border-radius: var(--rad-full);
    max-width: 100%;
}

.copy-pill-prompt {
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: var(--type-caption);
    color: var(--muted);
}

.copy-pill-code {
    min-width: 0;
    font-family: var(--font-mono);
    font-size: var(--type-caption);
    color: var(--ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.copy-pill-copy {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid var(--hairline);
    border-radius: var(--rad-full);
    background: var(--canvas);
    color: var(--muted);
    transition: border-color 0.15s ease, color 0.15s ease;
}

.copy-pill-copy:hover {
    border-color: var(--muted);
    color: var(--ink);
}

.copy-pill-copy.is-copied {
    color: var(--color-success);
    border-color: var(--color-success);
}

@media (max-width: 767px) {
    .copy-pill {
        width: 100%;
        justify-content: space-between;
        padding-left: 14px;
    }

    .copy-pill-copy {
        width: 44px;
        height: 44px;
    }
}

/* Feature list — icon row + title + copy, no card furniture */

.feature-grid {
    gap: var(--spacing-huge) var(--spacing-xxl);
}

@media (max-width: 1023px) {
    .feature-grid {
        gap: var(--spacing-xxl);
    }
}

@media (max-width: 767px) {
    .feature-grid {
        gap: var(--spacing-xl);
    }
}

.feature {
    display: grid;
    grid-template-columns: 24px 1fr;
    column-gap: var(--spacing-sm);
    row-gap: var(--spacing-xs);
}

.feature-icon {
    grid-row: 1;
    font-size: 18px;
    line-height: 1.4;
    color: var(--ink);
}

.feature h3 {
    font-size: var(--type-body-lg);
    font-weight: 700;
    line-height: 1.4;
}

.feature p {
    grid-column: 2;
    font-size: var(--type-caption);
    color: var(--muted);
}

/* Terminal window — shell frame with macOS-style controls (right side) */

.terminal-window {
    max-width: 760px;
    margin-inline: auto;
    background: transparent;
    border: 1px solid var(--hairline);
    border-radius: var(--rad-lg);
    box-shadow: var(--elev-l2);
    overflow: hidden;
}

.terminal-body {
    background: var(--canvas-raised);
}

.terminal-titlebar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border-bottom: 1px solid var(--glass-border);
}

.terminal-title {
    font-family: var(--font-mono);
    font-size: var(--type-caption);
    color: var(--muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.terminal-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

.terminal-control {
    width: 14px;
    height: 14px;
    background: transparent;
    border: 0;
    border-radius: var(--rad-full);
    cursor: default;
}

.terminal-control--minimize {
    background: var(--color-traffic-yellow);
}

.terminal-control--maximize {
    background: var(--color-traffic-green);
}

.terminal-control--close {
    background: var(--color-traffic-red);
}

.terminal-body {
    padding: var(--spacing-lg);
    min-height: 240px;
    font-family: var(--font-mono);
    font-size: var(--type-caption);
    line-height: 1.9;
    color: var(--ink);
    text-align: left;
}

.terminal-body > * + * {
    margin-top: var(--spacing-sm);
}

/* Welcome screen — codex-style intro lines */

.terminal-welcome-line {
    color: var(--ink);
    line-height: 1.5;
}

.terminal-welcome-line + .terminal-welcome-line {
    margin-top: var(--spacing-md);
}

.terminal-caret {
    color: var(--ink);
}

/* Current selection — option 1 highlighted green */

.terminal-welcome-line--selected,
.terminal-welcome-line--selected .terminal-caret {
    color: var(--color-success);
    font-weight: 600;
}

.terminal-welcome-note {
    color: var(--muted);
    line-height: 1.5;
}

.terminal-welcome-note.indent {
    padding-left: 2ch;
}

.terminal-welcome-note + .terminal-welcome-line {
    margin-top: var(--spacing-md);
}

.terminal-press {
    margin-top: var(--spacing-xxl);
    color: var(--muted);
}

/* Command line — user@host ~ command */

.terminal-cmd {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-lg);
    margin-block: var(--spacing-lg) !important;
}

.terminal-cmd-sep,
.terminal-cmd-user .terminal-cmd-sep {
    color: var(--muted);
}

/* Progres lines with green checks */

.terminal-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.terminal-status i {
    font-size: 14px;
    color: var(--color-success);
}

.terminal-status--bar {
    gap: var(--spacing-md);
}

.terminal-bar {
    display: inline-block;
    width: 72px;
    height: 8px;
    background: var(--color-chip-bg);
    border-radius: 2px;
    overflow: hidden;
}

.terminal-bar-fill {
    display: block;
    height: 100%;
    width: 62%;
    background: var(--color-success);
}

.terminal-time {
    color: var(--muted);
    font-size: var(--type-caption);
}

/* Info callout — boxed key-value block */

.terminal-callout {
    border: 1px solid var(--hairline);
    border-radius: var(--rad-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-block: var(--spacing-lg) !important;
}

.terminal-callout > * + * {
    margin-top: var(--spacing-xs);
}

.kv {
    display: flex;
    gap: var(--spacing-lg);
}

.kv + .kv {
    margin-top: var(--spacing-sm);
}

.kv-key {
    width: 110px;
    color: var(--muted);
}

.kv-val {
    color: var(--ink);
}

.kv-val--running {
    color: var(--color-success);
    text-decoration: underline;
    text-decoration-color: var(--color-success);
}

.terminal-badge {
    display: inline-block;
    margin-bottom: var(--spacing-sm);
    padding: 2px var(--spacing-sm);
    background: var(--primary);
    color: var(--on-primary);
    border-radius: var(--rad-sm);
    font-size: var(--type-micro-cap);
    font-weight: 700;
    letter-spacing: 0.32px;
}

.terminal-line {
    display: flex;
    align-items: center;
    gap: 2px;
}

.terminal-line--waiting {
    margin-top: var(--spacing-lg) !important;
}

.terminal-prompt {
    color: var(--ink);
}

.terminal-cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    margin-left: var(--spacing-xs);
    background: var(--muted);
    animation: cursorBlink 1s step-end infinite;
}

@keyframes cursorBlink {
    50% { opacity: 0; }
}

@media (max-width: 767px) {
    .terminal-window {
        border-radius: var(--rad-md);
        box-shadow: var(--elev-l1);
    }

    .terminal-body {
        min-height: 200px;
        padding: var(--spacing-md);
    }
}

/* Table — reusable data grid (comparison, rankings, ledger) */

.table-wrap {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--type-body-md);
}

.table th,
.table td {
    padding: var(--spacing-md) var(--spacing-md);
    border-bottom: 1px solid var(--hairline);
    text-align: left;
    white-space: nowrap;
}

.table thead th {
    font-size: var(--type-caption);
    font-weight: 700;
    letter-spacing: 0.32px;
    color: var(--ink);
}

.table tbody th {
    font-weight: 600;
    color: var(--ink);
}

.table tbody td {
    color: var(--muted);
}

/* Metric columns — centered; first/label column stays left */
.table th:not(:first-child),
.table td:not(:first-child) {
    text-align: center;
}

.table .ph-check {
    color: var(--color-success);
    font-size: var(--type-body-lg);
}

.table .ph-minus {
    color: var(--muted);
    font-size: var(--type-body-lg);
}

@media (max-width: 767px) {
    .table {
        font-size: var(--type-caption);
    }

    .table th,
    .table td {
        padding: var(--spacing-md) var(--spacing-sm);
    }
}

/* Legal copy — long-form text and date stamp */

.legal-copy {
    max-width: 720px;
    color: var(--muted);
}

.legal-copy p + p {
    margin-top: var(--spacing-md);
}

.legal-copy a {
    color: var(--ink);
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: var(--hairline);
    text-underline-offset: 4px;
}

.legal-copy a:hover {
    text-decoration-color: var(--ink);
}

.legal-date {
    margin-top: var(--spacing-xl);
    font-family: var(--font-mono);
    font-size: var(--type-micro-cap);
    color: var(--muted);
}

/* Error screen — standalone branded 404/500 */

.error-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    text-align: center;
    padding: var(--spacing-lg);
}

.error-code {
    margin: 0;
    font-family: var(--font-mono);
    font-size: var(--type-display-xxl);
    font-weight: 800;
    line-height: 1;
}

.error-page h1 {
    margin: 0;
    font-size: var(--type-heading-lg);
}

.error-page .btn {
    margin-top: var(--spacing-lg);
}

/* FAQ — native accordion (details/summary, no JS) */

.faq {
    max-width: 720px;
    margin-inline: auto;
    border-bottom: 1px solid var(--hairline);
    text-align: left;
}

.faq-item + .faq-item {
    border-top: 1px solid var(--hairline);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) 0;
    cursor: pointer;
    list-style: none;
}

.faq-question::-webkit-details-marker,
.faq-question::marker {
    display: none;
    content: '';
}

.faq-question h3 {
    font-size: var(--type-body-lg);
    font-weight: 700;
}

.faq-question .ph {
    flex-shrink: 0;
    font-size: var(--type-body-lg);
    color: var(--muted);
    transition: transform 0.15s ease;
}

.faq-item[open] .faq-question .ph {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 0 var(--spacing-lg);
    color: var(--muted);
    max-width: 60ch;
}

.faq-answer p {
    margin-bottom: var(--spacing-md);
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

/* Cards — dark surface with hairline; raised & inverted variants */

.card {
    background: var(--canvas);
    border: 1px solid var(--hairline);
    border-radius: var(--rad-lg);
    padding: var(--spacing-xxl) var(--spacing-huge);
}

/* Feature card — no border, separated by elevated color alone */

.card--flat {
    border: 0;
    background: var(--canvas-raised);
}

/* Featured pricing tier — inverted surfaces */

.card--inverted {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
}

/* Pricing — three-up grid with polarity-flipped middle tier */

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    align-items: stretch;
    text-align: left;
}

.pricing-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.pricing-name {
    font-family: var(--font-mono);
    font-size: var(--type-micro-cap);
    font-weight: 700;
    letter-spacing: 0.96px;
    color: var(--muted);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    font-size: var(--type-display-xxl);
    font-weight: 800;
    line-height: 1;
}

.pricing-period {
    font-size: var(--type-caption);
    font-weight: 400;
    color: var(--muted);
}

.pricing-desc {
    color: var(--muted);
}

/* Hairline-divided feature list with dot bullets */

.pricing-list {
    list-style: none;
}

.pricing-list li {
    position: relative;
    padding: var(--spacing-lg) 0 var(--spacing-lg) var(--spacing-lg);
    border-bottom: 1px solid var(--hairline);
}

.pricing-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: calc(var(--spacing-lg) + 0.62em);
    width: 5px;
    height: 5px;
    border-radius: var(--rad-full);
    background: var(--muted);
}

.pricing-cta {
    margin-top: auto;
}

/* Pricing stair — 2-up tablet, 1-up mobile */

@media (max-width: 1023px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

/* Form Elements — standard inputs with hairline borders;
   focus replaces hairline with primary color. */

.form-field {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-label {
    font-size: var(--type-caption);
    font-weight: 700;
    letter-spacing: 0.32px;
    color: var(--ink);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    min-height: 44px;
    padding: 0 var(--spacing-md);
    background: var(--canvas-alt);
    border: 1px solid var(--hairline);
    border-radius: var(--rad-sm);
    color: var(--ink);
    font-size: var(--type-body-md);
    line-height: 1.4;
    transition: border-color 0.15s ease;
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--muted);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--muted);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-select {
    appearance: none;
    cursor: pointer;
    padding-right: 40px;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23a0a0a8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}

.form-textarea {
    min-height: 128px;
    padding: var(--spacing-md);
    resize: vertical;
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-input[aria-invalid='true'],
.form-select[aria-invalid='true'],
.form-textarea[aria-invalid='true'] {
    border-color: var(--color-danger);
}

/* ── 6. Utilities ────────────────────────────────────── */

/* Elevation — L0 flat (hairline border only) through L3 toast */

.elev-0 {
    border: 1px solid var(--hairline);
}

.elev-1 {
    box-shadow: var(--elev-l1);
}

.elev-2 {
    box-shadow: var(--elev-l2);
}

.elev-3 {
    box-shadow: var(--elev-l3);
}

/* Screen-reader only — content visually hidden, still announced */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip link — hidden until keyboard focus */

.skip-link {
    position: fixed;
    top: var(--spacing-sm);
    left: var(--spacing-lg);
    z-index: var(--z-header);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary);
    color: var(--on-primary);
    border-radius: var(--rad-button);
    font-size: var(--type-body-md);
    font-weight: 700;
    transform: translateY(-200%);
    transition: transform 0.15s ease;
}

.skip-link:focus {
    transform: translateY(0);
}

/* Glass — frosted translucent surface (aero glass) */

.glass {
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border: 1px solid var(--glass-border);
}

/* ── 7. Responsive ───────────────────────────────────── */

/* Heading stair-step (minor third scale):

   Tier        Desktop    Tablet(≤1023)   Mobile(≤767)
   h1          display-xxl 47.8   display-lg 39.8   display-md 33.2 / 1.75rem <480
   h2-h4       heading-lg 27.6    heading-lg 27.6   heading-lg 27.6
   h5          body-lg  19.2      body-lg 19.2      body-md 16
   h6          body-md  16        body-md 16        caption 13.3
   .lede/sub   body-lg  19.2      body-lg 19.2      body-md 16        */

/* Global stair-step behavior. Per-component responsive rules are
   co-located with each component.

   Breakpoints:
   Wide    ≥1440px
   Desktop 1024–1439px — default content max-width (1280px)
   Tablet  768–1023px
   Mobile  <768px — touch targets ≥44px */

/* ── Tablet (768–1023) ───────────────────────────── */

@media (max-width: 1023px) {
    /* Display tiers stair-step */
    h1 {
        font-size: var(--type-display-lg);
    }

    .section-heading {
        font-size: var(--type-display-md);
    }

    .container {
        padding-inline: var(--spacing-xxl);
    }

    .section {
        padding: var(--spacing-huge) var(--spacing-xxl); /* 64px 32px */
    }
}

/* ── Mobile (<768) ────────────────────────────────── */

@media (max-width: 767px) {
    /* Display tiers stair-step */
    h1 {
        font-size: var(--type-display-md);
        letter-spacing: 0;
    }

    .section-heading {
        font-size: var(--type-heading-lg);
    }

    h5 {
        font-size: var(--type-body-md);
    }

    h6 {
        font-size: var(--type-caption);
    }

    .lede,
    .section-sub {
        font-size: var(--type-body-md);
    }

    /* Touch targets — ≥44px (WCAG 2.5.5 AAA); form fields already 44px */
    .btn {
        min-height: 44px;
    }

    .container {
        padding-inline: var(--spacing-lg);
        padding-left: max(var(--spacing-lg), env(safe-area-inset-left));
        padding-right: max(var(--spacing-lg), env(safe-area-inset-right));
    }

    /* Section — relaxed margins with safe areas */
    .section {
        padding: 48px 20px;
        padding-left: max(20px, env(safe-area-inset-left));
        padding-right: max(20px, env(safe-area-inset-right));
    }
}

/* ── Small phones (<480) ───────────────────────────── */

@media (max-width: 479px) {
    h1 {
        font-size: 1.75rem;
    }

    .btn {
        padding: 0 var(--spacing-xl);
        font-size: var(--type-body-md);
    }

    .section {
        padding: 32px 16px;
    }
}

/* ── Reduced motion ────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}