/* ================================
   SimFlyMinimums — Aviation Instrument Aesthetic
   Dark navy/charcoal base · warm amber accents · refined typography
   ================================ */

:root {
    /* Color palette — inspired by night-lit cockpit instruments */
    --color-bg: #0a0e14;
    --color-bg-elev: #11161e;
    --color-bg-card: #161c26;
    --color-border: #1f2733;
    --color-border-strong: #2a3441;
    
    --color-text: #e8ecf1;
    --color-text-dim: #9aa3b2;
    --color-text-muted: #6b7384;
    
    --color-amber: #e9a648;
    --color-amber-dim: #b8842f;
    --color-amber-glow: rgba(233, 166, 72, 0.15);
    
    --color-accent-2: #5dd3a8;
    
    /* Typography */
    --font-display: 'Major Mono Display', monospace;
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-mono: 'JetBrains Mono', 'Consolas', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Layout */
    --container-max: 1320px;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-xxl: 8rem;
    
    /* Effects */
    --radius-sm: 4px;
    --radius-md: 8px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ================================
   Reset & Base
   ================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    
    /* Subtle radial atmosphere */
    background-image:
        radial-gradient(circle at 20% 0%, rgba(233, 166, 72, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 80% 100%, rgba(93, 211, 168, 0.03) 0%, transparent 40%);
    background-attachment: fixed;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition);
}

button {
    font: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ================================
   Typography
   ================================ */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 500;
    line-height: 1.15;
    letter-spacing: -0.01em;
}

h1 {
    font-size: clamp(2.5rem, 5vw + 1rem, 4.75rem);
    font-weight: 500;
}

h2 {
    font-size: clamp(2rem, 3vw + 1rem, 3rem);
    font-weight: 500;
}

h3 {
    font-size: 1.4rem;
    font-weight: 600;
}

h4 {
    font-size: 1.1rem;
    font-weight: 600;
}

p {
    color: var(--color-text-dim);
    line-height: 1.7;
}

.accent {
    color: var(--color-amber);
    font-style: italic;
}

/* ================================
   Header / Navigation
   ================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(10, 14, 20, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    letter-spacing: 0.05em;
}

.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    background: var(--color-amber);
    color: var(--color-bg);
    font-family: var(--font-display);
    font-size: 0.7rem;
    border-radius: 50%;
    letter-spacing: 0.05em;
}

.logo-text {
    color: var(--color-text);
    font-weight: 500;
}

.main-nav {
    display: flex;
    gap: 2.5rem;
}

.main-nav a {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-dim);
    letter-spacing: 0.03em;
    position: relative;
    padding: 0.25rem 0;
}

.main-nav a:hover {
    color: var(--color-amber);
}

.main-nav a.active {
    color: var(--color-text);
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-amber);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--color-text);
    transition: all var(--transition);
}

/* ================================
   Eyebrow Label
   ================================ */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-amber);
    margin-bottom: 1.5rem;
}

.eyebrow-dot {
    width: 6px;
    height: 6px;
    background: var(--color-amber);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--color-amber);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ================================
   Hero — Side by Side
   ================================ */
.hero {
    padding: var(--space-xl) 0 var(--space-xxl);
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 0.85fr 1.9fr;
    gap: var(--space-sm);
    align-items: center;
}

.hero-content {
    max-width: 540px;
}

.hero-title {
    font-size: clamp(2rem, 4vw, 3.1rem);
    margin-bottom: 1.25rem;
}

.hero-lead {
    font-size: 1.02rem;
    line-height: 1.65;
    margin-bottom: 2rem;
    color: var(--color-text-dim);
    max-width: 440px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.hero-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.meta-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.meta-value {
    font-size: 0.9rem;
    color: var(--color-text);
}

/* Cockpit visual frame */
.hero-visual {
    position: relative;
}

.cockpit-frame {
    position: relative;
    aspect-ratio: 2538 / 1477;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border-strong);
    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.5),
        0 0 0 1px var(--color-border) inset;
}

.cockpit-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cockpit-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
        rgba(10, 14, 20, 0.1) 0%,
        rgba(10, 14, 20, 0.3) 50%,
        rgba(10, 14, 20, 0.7) 100%);
    pointer-events: none;
}

/* Instrument readout overlay — top-right corner */
.instrument-readout {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(10, 14, 20, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--color-amber-dim);
    border-radius: var(--radius-sm);
    padding: 1rem 1.25rem;
    font-family: var(--font-mono);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    min-width: 130px;
}

.readout-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    padding: 0.3rem 0;
    border-bottom: 1px solid rgba(233, 166, 72, 0.15);
}

.readout-row:last-child {
    border-bottom: none;
}

.readout-label {
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.readout-value {
    font-size: 1.1rem;
    color: var(--color-amber);
    font-weight: 500;
    text-shadow: 0 0 10px var(--color-amber-glow);
}

.readout-value small {
    font-size: 0.65rem;
    color: var(--color-text-muted);
    margin-left: 0.15rem;
}

/* ================================
   Buttons
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.75rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-amber);
    color: var(--color-bg);
    font-weight: 600;
}

.btn-primary:hover {
    background: #f5b658;
    transform: translateY(-1px);
    box-shadow: 0 8px 24px var(--color-amber-glow);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border-strong);
}

.btn-ghost:hover {
    border-color: var(--color-amber);
    color: var(--color-amber);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 0.95rem;
}

/* ================================
   Section Headers
   ================================ */
.section-header {
    margin-bottom: 3.5rem;
}

.section-header.centered {
    text-align: center;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.section-number {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-amber);
    margin-bottom: 0.75rem;
}

.section-sub {
    margin-top: 1rem;
    font-size: 1.1rem;
}

.section-cta {
    margin-top: 3rem;
    text-align: center;
}

/* ================================
   Features Preview Grid
   ================================ */
.features-preview {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 2rem;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-amber), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.feature-card:hover {
    border-color: var(--color-border-strong);
    transform: translateY(-2px);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-amber);
    margin-bottom: 1.5rem;
    background: var(--color-amber-glow);
    border-radius: var(--radius-sm);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.feature-card p {
    font-size: 0.95rem;
}

/* ================================
   Quote Block
   ================================ */
.quote-block {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.quote-block blockquote {
    max-width: 800px;
    margin: 0 auto;
}

.quote-block blockquote p {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 2.5vw, 2.25rem);
    font-style: italic;
    color: var(--color-text);
    line-height: 1.4;
    margin-bottom: 1.5rem;
}

.quote-block cite {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-amber);
    font-style: normal;
    letter-spacing: 0.05em;
}

/* ================================
   CTA Block
   ================================ */
.cta-block {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
    background: linear-gradient(180deg, transparent, var(--color-bg-elev));
}

.cta-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-md);
    align-items: center;
}

.cta-grid h2 {
    margin-bottom: 0.75rem;
}

.cta-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ================================
   Page Hero (sub-pages)
   ================================ */
.page-hero {
    padding: var(--space-xl) 0 var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
    margin-bottom: 1.5rem;
    max-width: 800px;
}

.page-lead {
    font-size: 1.25rem;
    max-width: 640px;
    color: var(--color-text-dim);
}

/* ================================
   Feature Detail Rows (Features page)
   ================================ */
.feature-detail {
    padding: var(--space-xl) 0;
}

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

.feature-row:last-child {
    border-bottom: none;
}

.feature-row.reverse .feature-row-text {
    order: 2;
}

.feature-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-amber);
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.feature-row-text h2 {
    margin-bottom: 1.25rem;
}

.feature-row-text p {
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
    margin-top: 1.5rem;
}

.feature-list li {
    position: relative;
    padding-left: 1.5rem;
    padding-bottom: 0.65rem;
    color: var(--color-text-dim);
    font-size: 0.95rem;
}

.feature-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-amber);
}

.screenshot-frame {
    aspect-ratio: 4/3;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.screenshot-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.screenshot-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg-elev));
    letter-spacing: 0.05em;
}

/* ================================
   Spec Strip
   ================================ */
.spec-strip {
    padding: var(--space-lg) 0;
    background: var(--color-bg-elev);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    padding-left: 1rem;
    border-left: 2px solid var(--color-amber);
}

.spec-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.spec-value {
    color: var(--color-text);
    font-size: 0.95rem;
}

/* ================================
   Download Page
   ================================ */
.download-block {
    padding: var(--space-xl) 0;
}

.download-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
}

.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-amber), transparent);
}

.download-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.version-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-amber);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.version-number {
    font-family: var(--font-mono);
    color: var(--color-amber);
    font-size: 0.7em;
    margin-left: 0.5rem;
    vertical-align: middle;
}

.version-meta {
    margin-top: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.download-note {
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.download-note p {
    font-size: 0.9rem;
}

.download-note strong {
    color: var(--color-amber);
}

.requirements,
.install-steps {
    margin-bottom: 3rem;
}

.requirements h3,
.install-steps h3 {
    margin-bottom: 1.5rem;
    font-family: var(--font-serif);
    font-size: 1.5rem;
}

.req-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
}

.req-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 1rem 1.25rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.req-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.req-value {
    color: var(--color-text);
    font-size: 0.95rem;
}

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

.step-list li {
    display: flex;
    gap: 1.5rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--color-border);
}

.step-list li:last-child {
    border-bottom: none;
}

.step-num {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-amber-glow);
    border: 1px solid var(--color-amber-dim);
    color: var(--color-amber);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    border-radius: 50%;
}

.step-list h4 {
    margin-bottom: 0.4rem;
    color: var(--color-text);
}

.step-list p {
    font-size: 0.95rem;
}

/* ================================
   About Page — Story
   ================================ */
.story-block {
    padding: var(--space-xl) 0;
}

.story-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-lg);
    align-items: start;
}

.story-text h2 {
    margin-bottom: 2rem;
}

.story-text p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.side-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 2rem;
    position: sticky;
    top: 6rem;
}

.side-card h3 {
    margin-bottom: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-amber);
    font-weight: 500;
}

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

.tech-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-dim);
    font-size: 0.95rem;
}

.tech-list li:last-child {
    border-bottom: none;
}

/* ================================
   Donate Block
   ================================ */
.donate-block {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-elev);
}

.donate-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.donate-card {
    display: block;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 2rem;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.donate-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-amber);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.donate-card:hover {
    border-color: var(--color-amber-dim);
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.donate-card:hover::before {
    transform: scaleX(1);
}

.donate-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-amber);
    background: var(--color-amber-glow);
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
}

.donate-icon svg {
    width: 28px;
    height: 28px;
}

.donate-card h3 {
    margin-bottom: 0.75rem;
}

.donate-card p {
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
}

.donate-cta {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-amber);
    letter-spacing: 0.05em;
}

.donate-note {
    text-align: center;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.donate-note code {
    background: var(--color-bg-card);
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    color: var(--color-amber);
}

/* ================================
   Contact Block
   ================================ */
.contact-block {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.contact-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition);
}

.contact-card:hover {
    border-color: var(--color-amber-dim);
}

.contact-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.contact-value {
    color: var(--color-text);
    font-size: 1rem;
    transition: color var(--transition);
}

a.contact-value:hover {
    color: var(--color-amber);
}

/* ================================
   Footer
   ================================ */
.site-footer {
    padding: var(--space-lg) 0 var(--space-md);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-elev);
}

.footer-inner {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--space-md);
    align-items: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.footer-nav {
    display: flex;
    gap: 2rem;
    justify-content: center;
}

.footer-nav a {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-dim);
    letter-spacing: 0.05em;
}

.footer-nav a:hover {
    color: var(--color-amber);
}

.footer-meta {
    text-align: right;
}

.footer-meta p {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ================================
   Mobile Responsiveness
   ================================ */
@media (max-width: 900px) {
    .hero-grid,
    .feature-row,
    .feature-row.reverse,
    .story-grid,
    .cta-grid,
    .download-card-header {
        grid-template-columns: 1fr;
    }
    
    .feature-row.reverse .feature-row-text {
        order: 0;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-meta {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .meta-item {
        flex-direction: row;
        justify-content: space-between;
        align-items: baseline;
        padding-bottom: 0.75rem;
        border-bottom: 1px solid var(--color-border);
    }
    
    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-nav {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .footer-meta {
        text-align: center;
    }
    
    .side-card {
        position: static;
    }
}

@media (max-width: 640px) {
    :root {
        --space-xl: 4rem;
        --space-xxl: 5rem;
    }
    
    .container {
        padding: 0 1.25rem;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: 5rem;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-bg-elev);
        padding: 1.5rem var(--space-md);
        border-bottom: 1px solid var(--color-border);
        gap: 1.5rem;
        transform: translateY(-110%);
        transition: transform var(--transition);
    }
    
    .main-nav.open {
        transform: translateY(0);
    }
    
    .hero {
        padding-top: var(--space-lg);
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .instrument-readout {
        top: 0.75rem;
        right: 0.75rem;
        padding: 0.6rem 0.85rem;
        min-width: 100px;
    }
    
    .readout-value {
        font-size: 0.95rem;
    }
    
    .download-card {
        padding: 1.5rem;
    }
    
    .step-list li {
        flex-direction: column;
        gap: 0.75rem;
    }
}

/* ================================
   Badges — Free / Premium / BYOK
   ================================ */
.badges {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    border: 1px solid var(--color-border-strong);
    color: var(--color-text-muted);
    white-space: nowrap;
}

.badge-free {
    color: var(--color-accent-2);
    border-color: rgba(93, 211, 168, 0.4);
    background: rgba(93, 211, 168, 0.08);
}

.badge-premium {
    color: var(--color-amber);
    border-color: var(--color-amber-dim);
    background: var(--color-amber-glow);
}

.badge-byok {
    color: var(--color-text-dim);
    border-color: var(--color-border-strong);
}

/* ================================
   Feature Categories (Features page)
   ================================ */
.feature-category {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-border);
}

.category-head {
    margin-bottom: 2.5rem;
    max-width: 640px;
}

.category-head h2 {
    margin-bottom: 0.75rem;
}

.category-head p {
    font-size: 1.05rem;
}

/* Capability card — one feature, short line, badge */
.cap-card {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: all var(--transition);
}

.cap-card:hover {
    border-color: var(--color-border-strong);
    transform: translateY(-2px);
}

.cap-card h3 {
    font-size: 1.05rem;
    color: var(--color-text);
}

.cap-card p {
    font-size: 0.9rem;
    flex-grow: 1;
}

.cap-card .badges {
    margin-top: auto;
    padding-top: 0.25rem;
}

/* ================================
   Pricing
   ================================ */
.pricing {
    padding: var(--space-xl) 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    align-items: start;
}

.price-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 2.25rem;
    overflow: hidden;
}

.price-card.featured {
    border-color: var(--color-amber-dim);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.price-card.featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-amber);
}

.price-ribbon {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-amber);
    background: var(--color-amber-glow);
    border: 1px solid var(--color-amber-dim);
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
}

.price-name {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-amber);
    margin-bottom: 1.25rem;
}

.price-amount {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
    font-family: var(--font-serif);
}

.price-value {
    font-size: 3rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1;
}

.price-period {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.price-desc {
    font-size: 0.9rem;
    color: var(--color-text-dim);
    margin-bottom: 1.75rem;
    min-height: 2.6em;
}

.price-card .btn {
    width: 100%;
    justify-content: center;
    margin-bottom: 1.75rem;
}

.price-features {
    list-style: none;
}

.price-features li {
    position: relative;
    padding-left: 1.6rem;
    padding-bottom: 0.7rem;
    color: var(--color-text-dim);
    font-size: 0.9rem;
    line-height: 1.5;
}

.price-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--color-accent-2);
    font-weight: 600;
}

.price-features li.muted {
    color: var(--color-text-muted);
}

.price-features li.muted::before {
    content: '—';
    color: var(--color-text-muted);
}

/* Pricing fine print */
.pricing-notes {
    padding: var(--space-lg) 0 var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.notes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
    margin-top: 2.5rem;
}

.note-item {
    padding: 1.25rem 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.note-item h4 {
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.note-item p {
    font-size: 0.9rem;
}

/* ================================
   Pricing / capability responsive
   ================================ */
@media (max-width: 900px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

/* ================================
   Footer — multi-column
   ================================ */
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-md);
    padding-bottom: var(--space-lg);
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.footer-col h4 {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.footer-col a {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--color-text-dim);
}

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

.footer-tagline {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.05rem;
    color: var(--color-text-dim);
    margin-top: 0.85rem;
    max-width: 260px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: var(--space-sm);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

@media (max-width: 720px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md) var(--space-sm);
    }
    .footer-brand-col {
        grid-column: 1 / -1;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* ================================
   FAQ Accordion
   ================================ */
.faq-block {
    padding: var(--space-xl) 0;
}

.faq-group {
    max-width: 820px;
    margin: 0 auto var(--space-lg);
}

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

.faq-group > .section-number {
    margin-bottom: 1rem;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: 1.35rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--color-text);
    transition: color var(--transition);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary:hover {
    color: var(--color-amber);
}

.faq-item summary::after {
    content: '+';
    font-family: var(--font-mono);
    color: var(--color-amber);
    font-size: 1.5rem;
    line-height: 1;
    flex-shrink: 0;
    transition: transform var(--transition);
}

.faq-item[open] summary::after {
    content: '–';
}

.faq-answer {
    padding: 0 0 1.5rem;
    max-width: 680px;
}

.faq-answer p {
    font-size: 1rem;
    margin-bottom: 1rem;
}

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

/* ================================
   Contact Form
   ================================ */
.contact-form-block {
    padding: var(--space-xl) 0;
}

.contact-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-lg);
    align-items: start;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-field.full {
    grid-column: 1 / -1;
}

.form-field label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.form-field input,
.form-field select,
.form-field textarea {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    padding: 0.75rem 0.9rem;
    color: var(--color-text);
    width: 100%;
    transition: border-color var(--transition);
}

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

.form-field textarea {
    resize: vertical;
    min-height: 150px;
}

.form-field input[type="file"] {
    padding: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

.form-actions {
    margin-top: 1.75rem;
}

.form-note {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--color-text-muted);
    margin-top: 1rem;
}

.contact-aside .side-card {
    position: static;
    margin-bottom: 1.5rem;
}

.contact-aside .side-card a {
    color: var(--color-amber);
}

/* ================================
   Prose — Docs & Legal
   ================================ */
.prose {
    max-width: 760px;
    margin: 0 auto;
    padding: var(--space-xl) 0;
}

.prose h2 {
    font-size: 1.8rem;
    margin: 2.75rem 0 1rem;
}

.prose h2:first-child {
    margin-top: 0;
}

.prose h3 {
    margin: 2rem 0 0.75rem;
    color: var(--color-text);
}

.prose p {
    margin-bottom: 1.25rem;
}

.prose ul,
.prose ol {
    margin: 0 0 1.25rem 1.25rem;
}

.prose li {
    color: var(--color-text-dim);
    padding-bottom: 0.5rem;
    line-height: 1.6;
}

.prose a {
    color: var(--color-amber);
}

.prose a:hover {
    text-decoration: underline;
}

.legal-meta {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
}

.legal-banner {
    background: var(--color-amber-glow);
    border: 1px solid var(--color-amber-dim);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    margin-bottom: 2.5rem;
}

.legal-banner p {
    font-size: 0.9rem;
    color: var(--color-text);
    margin: 0;
}

/* Docs index */
.docs-index {
    padding: var(--space-xl) 0;
}

.doc-card {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: all var(--transition);
}

.doc-card:hover {
    border-color: var(--color-amber-dim);
    transform: translateY(-2px);
}

.doc-card .doc-num {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    color: var(--color-amber);
}

.doc-card h3 {
    font-size: 1.1rem;
    color: var(--color-text);
}

.doc-card p {
    font-size: 0.9rem;
}

@media (max-width: 720px) {
    .contact-layout,
    .form-grid {
        grid-template-columns: 1fr;
    }
}

/* ================================
   Auth — Register / Login
   ================================ */
.auth-block {
    padding: var(--space-lg) 0 var(--space-xl);
}

.auth-card {
    max-width: 460px;
    margin: 0 auto;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-amber), transparent);
}

.auth-head {
    margin-bottom: 1.75rem;
}

.auth-head h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.auth-head p {
    font-size: 0.95rem;
}

.auth-perk {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent-2);
    background: rgba(93, 211, 168, 0.08);
    border: 1px solid rgba(93, 211, 168, 0.4);
    border-radius: 999px;
    padding: 0.3rem 0.7rem;
    margin-bottom: 1.5rem;
}

.auth-card .form-field {
    margin-bottom: 1.1rem;
}

.auth-card .btn {
    width: 100%;
    justify-content: center;
    margin-top: 0.5rem;
}

.checkbox-field {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    margin: 0.5rem 0 1rem;
}

.checkbox-field input {
    width: auto;
    margin-top: 0.2rem;
    accent-color: var(--color-amber);
    flex-shrink: 0;
}

.checkbox-field label {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-text-dim);
    text-transform: none;
    letter-spacing: 0;
    line-height: 1.5;
}

.checkbox-field label a {
    color: var(--color-amber);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.auth-switch {
    text-align: center;
    margin-top: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--color-text-dim);
}

.auth-switch a {
    color: var(--color-amber);
}

.auth-meta {
    text-align: center;
    margin-top: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.auth-forgot {
    display: block;
    text-align: right;
    margin-top: -0.5rem;
    margin-bottom: 1.1rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.auth-forgot:hover {
    color: var(--color-amber);
}

/* ================================
   Header account CTA
   ================================ */
.header-cta {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.nav-signin {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-dim);
    letter-spacing: 0.03em;
}

.nav-signin:hover {
    color: var(--color-amber);
}

.btn-sm {
    padding: 0.55rem 1.1rem;
    font-size: 0.78rem;
}

/* Account links that only appear inside the mobile nav overlay */
.nav-account {
    display: none;
}

@media (max-width: 640px) {
    .header-cta {
        display: none;
    }
    .nav-account {
        display: block;
        color: var(--color-amber);
    }
}

/* ================================
   Media frame — image or video
   ================================ */
.media-frame {
    position: relative;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border-strong);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    background: var(--color-bg-card);
    margin-bottom: 2.5rem;
}

.media-frame img,
.media-frame video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.media-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.85rem;
    text-align: center;
    padding: 1.5rem;
    background:
        radial-gradient(circle at 50% 40%, rgba(233, 166, 72, 0.06), transparent 60%),
        linear-gradient(135deg, var(--color-bg-card), var(--color-bg-elev));
}

.media-placeholder .play {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 1px solid var(--color-amber-dim);
    background: var(--color-amber-glow);
    color: var(--color-amber);
    display: flex;
    align-items: center;
    justify-content: center;
}

.media-placeholder .play svg {
    width: 22px;
    height: 22px;
    margin-left: 3px;
}

.media-placeholder .ph-label {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--color-text-dim);
    max-width: 28ch;
}

.media-placeholder .ph-file {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
}

.media-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 2;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-amber);
    background: rgba(10, 14, 20, 0.8);
    border: 1px solid var(--color-amber-dim);
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
}