/* =================================================================
   StageTools — Website Design System
   Built by a working lighting programmer, for lighting crews.
   ================================================================= */

/* ---------- RESET + BASELINE ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: 'Gill Sans', 'Gill Sans MT', 'GillSans-SemiBold', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.55;
    font-weight: 500;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

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

/* ---------- DESIGN TOKENS ---------- */
:root {
    /* Backgrounds */
    --bg-base: #0a0a0b;
    --bg-surface: #131317;
    --bg-elevated: #1c1c21;
    --bg-card-hover: #23232a;

    /* Borders */
    --border-subtle: #1f1f25;
    --border-default: #2a2a30;
    --border-strong: #3a3a42;

    /* Text */
    --text-primary: #ffffff;
    --text-secondary: #a8a8b0;
    --text-muted: #6a6a72;
    --text-dim: #48484f;

    /* Brand accent — iOS system blue (matches the app) */
    --accent: #0a84ff;
    --accent-hover: #32a0ff;
    --accent-dim: rgba(10, 132, 255, 0.15);
    --accent-glow: rgba(10, 132, 255, 0.35);

    /* Legacy aliases — kept so feature-specific blue references stay blue */
    --accent-blue: #0a84ff;
    --accent-blue-hover: #32a0ff;
    --accent-blue-dim: rgba(10, 132, 255, 0.15);
    --accent-blue-glow: rgba(10, 132, 255, 0.35);

    /* Tool gradient accents — EXACT match to app FeatureColor struct (ContentView.swift) */
    --grad-network:       linear-gradient(135deg, #1A8CCC, #3366F2);  /* Devices — blue */
    --grad-dmx:           linear-gradient(135deg, #403399, #8C40BF);  /* DMX Viewer — indigo → violet */
    --grad-console:       linear-gradient(135deg, #1A8066, #26BFD9);  /* Micro Console (dmxTransmit) — teal → cyan */
    --grad-dip:           linear-gradient(135deg, #404D61, #738CB3);  /* DIP Switch — slate */
    --grad-cct:           linear-gradient(135deg, #A6591A, #FFBF33);  /* CCT — warm amber */
    --grad-fixture-test:  linear-gradient(135deg, #993380, #CC59A6);  /* Fixture Test — magenta */
    --grad-protocol:      linear-gradient(135deg, #006680, #66CC40);  /* Protocol Detector — teal → green */
    --grad-rdm:           linear-gradient(135deg, #7326BF, #E6731A);  /* RDM — violet → orange */
    --grad-ltc:           linear-gradient(135deg, #D92633, #FF8C26);  /* LTC — red → warm orange */
    --grad-curve:         linear-gradient(135deg, #BF338C, #F2A640);  /* Curve Builder — magenta → gold */
    --grad-ndi:           linear-gradient(135deg, #2640D9, #D93399);  /* NDI — blue → magenta */
    --grad-plots:         linear-gradient(135deg, #59268C, #8040B3);  /* Quick Plots — deep purple */
    --grad-fixtures:      linear-gradient(135deg, #267359, #339980);  /* Fixture Library — forest green */
    --grad-files:         linear-gradient(135deg, #804D1A, #A67333);  /* Files — bronze */
    --grad-scout:         linear-gradient(135deg, #B39900, #D9BF26);  /* Scout — mustard */

    /* Spacing scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 3rem;
    --space-8: 4rem;
    --space-9: 6rem;
    --space-10: 8rem;

    /* Type scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3.5rem;
    --text-6xl: 4.5rem;

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 820px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.55);
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-default: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- LAYOUT PRIMITIVES ---------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

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

section {
    padding: var(--space-9) 0;
}

@media (max-width: 768px) {
    section {
        padding: var(--space-8) 0;
    }
}

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Gill Sans', 'Gill Sans MT', 'GillSans-SemiBold', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 600; /* SemiBold */
    letter-spacing: -0.01em;
    line-height: 1.18;
    color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.03em; }
h3 { font-size: clamp(1.5rem, 2.5vw, 2rem); }
h4 { font-size: 1.25rem; letter-spacing: -0.01em; }

p {
    color: var(--text-secondary);
    font-size: var(--text-base);
}

.lede {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--text-secondary);
    line-height: 1.55;
    max-width: 680px;
}

.eyebrow {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent);
    margin-bottom: var(--space-4);
}

.section-title {
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 680px;
    margin-bottom: var(--space-7);
}

.mono {
    font-family: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
    font-size: 0.9em;
}

/* ---------- NAV ---------- */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 11, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-4) var(--space-5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 600;
    font-size: var(--text-lg);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.nav-logo img {
    height: 28px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
}

.nav-links a {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

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

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--accent);
    color: #0a0a0b !important;
    font-weight: 600;
    font-size: var(--text-sm);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav-cta:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    padding: var(--space-2);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-surface);
        border-bottom: 1px solid var(--border-default);
        flex-direction: column;
        padding: var(--space-5);
        gap: var(--space-4);
        align-items: stretch;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: var(--space-3) 0;
        border-bottom: 1px solid var(--border-subtle);
    }

    .nav-links li:last-child a {
        border-bottom: none;
    }

    .nav-toggle {
        display: block;
    }
}

/* ---------- BUTTONS ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-default);
    cursor: pointer;
    white-space: nowrap;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--accent);
    color: #0a0a0b;
    box-shadow: 0 0 0 0 var(--accent-glow), 0 4px 16px rgba(10, 132, 255, 0.15);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 0 0 4px var(--accent-glow), 0 8px 28px rgba(10, 132, 255, 0.25);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--border-default);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-strong);
    transform: translateY(-2px);
}

.btn-ghost {
    color: var(--text-secondary);
    padding: var(--space-3) var(--space-4);
}

.btn-ghost:hover {
    color: var(--text-primary);
}

.btn-arrow::after {
    content: '→';
    transition: transform var(--transition-fast);
}

.btn-arrow:hover::after {
    transform: translateX(3px);
}

/* ---------- HERO ---------- */
.hero {
    position: relative;
    padding: var(--space-10) 0 var(--space-9);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 700px;
    background: radial-gradient(
        ellipse at center,
        rgba(10, 132, 255, 0.15) 0%,
        rgba(10, 132, 255, 0.05) 30%,
        transparent 60%
    );
    pointer-events: none;
    z-index: 0;
}

.hero-inner {
    position: relative;
    z-index: 1;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-5);
    text-align: center;
}

.hero-brand {
    position: relative;
    isolation: isolate;
    font-family: 'Gill Sans', 'Gill Sans MT', 'GillSans-SemiBold', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 600;
    font-size: clamp(3.5rem, 11vw, 8rem);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    line-height: 0.95;
    color: var(--text-primary);
    margin-bottom: var(--space-5);
    /* prevent browser from substituting fallback display fonts at huge sizes */
    font-synthesis: none;
}

/* Logo watermark — sits behind the STAGETOOLS text at 15% opacity */
.hero-brand::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 4.2em;
    height: 4.2em;
    background: url('../images/Logosolo.png') center / contain no-repeat;
    opacity: 0.15;
    z-index: -1;
    pointer-events: none;
}

@media (max-width: 640px) {
    .hero-brand {
        letter-spacing: 0.02em;
        margin-bottom: var(--space-4);
    }
}

.hero-logo {
    display: block;
    width: 100%;
    max-width: 210px;
    height: auto;
    margin: 0 auto var(--space-6);
    /* Softer asymmetric fade — top starts higher, bottom trails longer */
    -webkit-mask-image: linear-gradient(to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.25) 8%,
        rgba(0, 0, 0, 0.75) 22%,
        #000 38%,
        #000 55%,
        rgba(0, 0, 0, 0.75) 75%,
        rgba(0, 0, 0, 0.25) 90%,
        transparent 100%);
    mask-image: linear-gradient(to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.25) 8%,
        rgba(0, 0, 0, 0.75) 22%,
        #000 38%,
        #000 55%,
        rgba(0, 0, 0, 0.75) 75%,
        rgba(0, 0, 0, 0.25) 90%,
        transparent 100%);
}

@media (max-width: 640px) {
    .hero-logo {
        max-width: 130px;
        margin-bottom: var(--space-5);
    }
}

.hero h1 {
    margin-bottom: var(--space-5);
    background: linear-gradient(180deg, #ffffff 0%, #a0a0a8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.h1-sub {
    display: block;
    font-size: 0.42em;
    font-weight: 500;
    letter-spacing: 0;
    line-height: 1.25;
    margin-top: 0.25em;
}

.hero-lede {
    margin: 0 auto var(--space-7);
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    line-height: 1.5;
    max-width: 700px;
}

.hero-ctas {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.hero-meta {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.hero-meta .dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #30d158;
    margin-right: var(--space-2);
    box-shadow: 0 0 8px #30d158;
    vertical-align: middle;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Smaller hero for inner pages */
.hero-sm {
    padding: var(--space-8) 0 var(--space-7);
    text-align: center;
}

.hero-sm h1 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: var(--space-4);
}

.hero-sm .hero-lede {
    font-size: var(--text-lg);
    margin-bottom: 0;
}

/* ---------- FEATURE CARDS / TOOL GRID ---------- */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-5);
}

.tool-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: all var(--transition-default);
    position: relative;
    overflow: hidden;
}

.tool-card:hover {
    background: var(--bg-elevated);
    border-color: var(--border-default);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--card-accent, var(--accent));
    opacity: 0;
    transition: opacity var(--transition-default);
}

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

.tool-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--card-accent, var(--grad-dmx));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
    color: #fff;
}

.tool-icon svg {
    width: 28px;
    height: 28px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.tool-icon svg.filled {
    fill: currentColor;
    stroke: none;
}

/* Custom app asset SVGs (black on disk — invert to white for the gradient tile) */
.tool-icon img.app-asset {
    width: 32px;
    height: 32px;
    filter: brightness(0) invert(1);
    object-fit: contain;
}

.tool-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.tool-card p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.55;
}

/* Tool card accent mixins — EXACT match to app FeatureColor struct */
.tool-card[data-accent="network"] { --card-accent: var(--grad-network); }
.tool-card[data-accent="dmx"] { --card-accent: var(--grad-dmx); }
.tool-card[data-accent="console"] { --card-accent: var(--grad-console); }
.tool-card[data-accent="dip"] { --card-accent: var(--grad-dip); }
.tool-card[data-accent="cct"] { --card-accent: var(--grad-cct); }
.tool-card[data-accent="fixture-test"] { --card-accent: var(--grad-fixture-test); }
.tool-card[data-accent="protocol"] { --card-accent: var(--grad-protocol); }
.tool-card[data-accent="rdm"] { --card-accent: var(--grad-rdm); }
.tool-card[data-accent="ltc"] { --card-accent: var(--grad-ltc); }
.tool-card[data-accent="curve"] { --card-accent: var(--grad-curve); }
.tool-card[data-accent="ndi"] { --card-accent: var(--grad-ndi); }
.tool-card[data-accent="plots"] { --card-accent: var(--grad-plots); }
.tool-card[data-accent="fixtures"] { --card-accent: var(--grad-fixtures); }
.tool-card[data-accent="files"] { --card-accent: var(--grad-files); }
.tool-card[data-accent="scout"] { --card-accent: var(--grad-scout); }

/* ---------- FEATURE BLOCK (alternating image + text) ---------- */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: center;
    padding: var(--space-8) 0;
}

.feature-block.reverse {
    direction: rtl;
}

.feature-block.reverse > * {
    direction: ltr;
}

.feature-block-text h3 {
    margin-bottom: var(--space-4);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
}

.feature-block-text .eyebrow {
    margin-bottom: var(--space-3);
}

.feature-block-text p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-5);
    line-height: 1.6;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: 1.5;
}

.feature-list li::before {
    content: '';
    flex-shrink: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    margin-top: 0.55em;
    box-shadow: 0 0 8px var(--accent-glow);
}

.feature-visual {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--space-7);
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--text-sm);
    position: relative;
    overflow: hidden;
}

.feature-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        circle at top right,
        var(--accent-dim) 0%,
        transparent 60%
    );
    opacity: 0.5;
}

@media (max-width: 768px) {
    .feature-block {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .feature-block.reverse {
        direction: ltr;
    }
}

/* ========================================================================
   SCROLL HERO — adapted from jh3y CodePen MYgaaem
   https://codepen.io/jh3y/pen/MYgaaem
   Scoped under .scroll-hero so it doesn't leak into the rest of the site.
   ======================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@100..900&display=swap');

@property --hue {
    initial-value: 0;
    syntax: '<number>';
    inherits: false;
}
@property --chroma {
    initial-value: 0;
    syntax: '<number>';
    inherits: true;
}

.scroll-hero {
    --start: 0;
    --end: 360;
    --lightness: 75%;
    --base-chroma: 0.3;
    --font-size-min: 14;
    --font-size-max: 20;
    --font-ratio-min: 1.1;
    --font-ratio-max: 1.33;
    --font-width-min: 375;
    --font-width-max: 1500;

    position: relative;
    width: 100%;
    background: var(--bg-base);
    color: #fff;
    font-family: 'Gill Sans', 'Gill Sans MT', 'GillSans-SemiBold', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-weight: 600;
}

.scroll-hero :where(.fluid) {
    --fluid-min: calc(var(--font-size-min) * pow(var(--font-ratio-min), var(--font-level, 0)));
    --fluid-max: calc(var(--font-size-max) * pow(var(--font-ratio-max), var(--font-level, 0)));
    --fluid-preferred: calc((var(--fluid-max) - var(--fluid-min)) / (var(--font-width-max) - var(--font-width-min)));
    --fluid-type: clamp(
        (var(--fluid-min) / 16) * 1rem,
        ((var(--fluid-min) / 16) * 1rem) - (((var(--fluid-preferred) * var(--font-width-min)) / 16) * 1rem) + (var(--fluid-preferred) * var(--variable-unit, 100vi)),
        (var(--fluid-max) / 16) * 1rem
    );
    font-size: var(--fluid-type);
}

/* Background grid — fixed behind the scroll-hero content */
.scroll-hero::before {
    --size: 45px;
    --line: rgba(255, 255, 255, 0.18);
    content: '';
    position: fixed;
    inset: 0;
    background:
        linear-gradient(90deg, var(--line) 1px, transparent 1px var(--size)) 50% 50% / var(--size) var(--size),
        linear-gradient(var(--line) 1px, transparent 1px var(--size)) 50% 50% / var(--size) var(--size);
    -webkit-mask: linear-gradient(-20deg, transparent 50%, #fff);
            mask: linear-gradient(-20deg, transparent 50%, #fff);
    pointer-events: none;
    z-index: 0;
}

.scroll-hero > * { position: relative; z-index: 1; }

/* Intro header — fullscreen; logo centered on page, "STAGETOOLS can." left-aligned */
.scroll-hero header {
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    width: 100%;
    padding: 3rem 5rem 0;
}
.scroll-hero-brand {
    width: 100%;
    flex: 1;
}
.scroll-hero-logo {
    width: auto;
    height: clamp(144px, 20vw, 280px);
    display: block;
    margin: 0 auto 1.5rem;   /* centered horizontally, spaced above h1 */
}
.scroll-hero h1 {
    --font-size-min: 24;
    --font-level: 8;
    text-wrap: pretty;
    text-align: left;
    line-height: 0.8;
    margin: 0;
    font-weight: 600;
    background: linear-gradient(#fff 60%, color-mix(in oklch, #000, #fff));
    -webkit-background-clip: text;
            background-clip: text;
    color: #0000;
}

.scroll-hero main { width: 100%; }

/* Content section — sticky "StageTools can" prefix + long list */
.scroll-hero section:first-of-type {
    --font-level: 5;
    display: flex;
    line-height: 1.25;
    width: 100%;
    padding-left: 5rem;
}
.scroll-hero section:first-of-type h2 {
    position: sticky;
    top: calc(50% - 0.5lh);
    font-size: inherit;
    margin: 0;
    display: inline-block;
    height: fit-content;
    font-weight: 600;
}

/* Smaller STAGETOOLS wordmark inside the sticky "STAGETOOLS can" heading */
.scroll-hero .brand-sm {
    font-size: 0.55em;
    letter-spacing: 0.04em;
    vertical-align: 0.08em;
}

.scroll-hero ul {
    font-weight: 600;
    padding-inline: 0;
    margin: 0;
    list-style-type: none;
    --step: calc((var(--end) - var(--start)) / (var(--count) - 1));
}
.scroll-hero li:not(:last-of-type) {
    color: oklch(var(--lightness) var(--base-chroma) calc(var(--start) + (var(--step) * var(--i))));
}

.scroll-hero[data-snap='true'] { scroll-snap-type: y proximity; }
.scroll-hero[data-snap='true'] li { scroll-snap-align: center; }

.scroll-hero h2,
.scroll-hero li:last-of-type {
    background: linear-gradient(#fff 50%, color-mix(in oklch, #000, #fff 25%));
    -webkit-background-clip: text;
            background-clip: text;
    color: #0000;
}

/* Final section — tighter than the intro so "All in one app." sits close to the verb list */
.scroll-hero section:last-of-type {
    min-height: 35vh;
    display: flex;
    place-items: center;
    width: 100%;
    justify-content: center;
    padding-block: 2rem 5rem;
}
.scroll-hero section:last-of-type h2 { --font-level: 6; }

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

/* Scrollbar color sync + per-item brighten — native animation-timeline path */
@supports (animation-timeline: scroll()) and (animation-range: 0% 100%) {
    .scroll-hero[data-sync-scrollbar='true'][data-animate='true'] {
        timeline-scope: --list;
        scrollbar-color: oklch(var(--lightness) var(--chroma, 0) var(--hue)) #0000;
        animation-name: scrollhero-change, scrollhero-chroma-on, scrollhero-chroma-off;
        animation-fill-mode: both;
        animation-timing-function: linear;
        animation-range: entry 50% exit 50%, entry 40% entry 50%, exit 30% exit 40%;
        animation-timeline: --list;
    }
    .scroll-hero ul { view-timeline: --list; }

    .scroll-hero[data-animate='true'] li {
        opacity: 0.2;
        animation-name: scrollhero-brighten;
        animation-fill-mode: both;
        animation-timing-function: linear;
        animation-range: cover calc(50% - 1lh) calc(50% + 1lh);
        animation-timeline: view();
    }
    .scroll-hero[data-animate='true'] li:first-of-type { --start-opacity: 1; }
    .scroll-hero[data-animate='true'] li:last-of-type {
        --brightness: 1;
        --end-opacity: 1;
    }
}

@keyframes scrollhero-change { to { --hue: var(--end); } }
@keyframes scrollhero-chroma-on { to { --chroma: 0.3; } }
@keyframes scrollhero-chroma-off { to { --chroma: 0; } }
@keyframes scrollhero-brighten {
    0% { opacity: var(--start-opacity, 0.2); }
    50% { opacity: 1; filter: brightness(var(--brightness, 1.2)); }
    100% { opacity: var(--end-opacity, 0.2); }
}

/* Mobile / tablet — prevent STAGETOOLS overflow + tighten padding */
@media (max-width: 900px) {
    .scroll-hero header { padding: 2rem 1.5rem 0; }
    .scroll-hero section:first-of-type { padding-left: 1.5rem; --font-level: 3.5; }
    .scroll-hero h1 { --font-level: 6; }
    .scroll-hero-logo { height: clamp(96px, 18vw, 200px); }
}

@media (max-width: 480px) {
    .scroll-hero header { padding: 1.5rem 1rem 0; }
    .scroll-hero section:first-of-type { padding-left: 1rem; --font-level: 2.5; }
    .scroll-hero h1 { --font-level: 4.5; }
    .scroll-hero-logo { height: 88px; }
}

/* ---------- PROOF STRIP (stats) ---------- */
.proof-strip {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--space-7) 0;
}

.proof-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-6);
    text-align: center;
}

.proof-item .number {
    display: block;
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 600;
    color: var(--accent);
    line-height: 1;
    letter-spacing: -0.02em;
    font-feature-settings: "tnum";
}

.proof-item .label {
    display: block;
    margin-top: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

/* ---------- FOUNDER BLOCK ---------- */
.founder-block {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    max-width: var(--container-narrow);
    margin: 0 auto;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.founder-block::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent);
    opacity: 0.7;
}

.founder-block .eyebrow {
    color: var(--accent);
}

.founder-quote {
    font-size: clamp(1.25rem, 2.5vw, 1.625rem);
    font-weight: 500;
    line-height: 1.5;
    color: var(--text-primary);
    margin-bottom: var(--space-5);
}

.founder-attribution {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.founder-attribution strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ---------- CTA BAND ---------- */
.cta-band {
    background: linear-gradient(
        135deg,
        rgba(10, 132, 255, 0.08) 0%,
        rgba(10, 132, 255, 0.02) 100%
    );
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--space-8) 0;
    text-align: center;
}

.cta-band h2 {
    margin-bottom: var(--space-4);
}

.cta-band p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ---------- FAQ ---------- */
.faq-list {
    max-width: var(--container-narrow);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.faq-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

.faq-item:hover {
    border-color: var(--border-default);
}

.faq-item[open] {
    border-color: var(--border-strong);
    background: var(--bg-elevated);
}

.faq-item summary {
    padding: var(--space-5) var(--space-6);
    font-weight: 600;
    font-size: var(--text-base);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    color: var(--text-primary);
}

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

.faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--accent);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-body {
    padding: 0 var(--space-6) var(--space-5);
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: 1.65;
}

.faq-body p + p {
    margin-top: var(--space-3);
}

/* ---------- DOWNLOAD CARDS ---------- */
.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-5);
    max-width: 900px;
    margin: 0 auto;
}

.download-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-7);
    text-align: center;
    transition: all var(--transition-default);
}

.download-card.primary {
    border-color: rgba(10, 132, 255, 0.3);
    background: linear-gradient(
        180deg,
        rgba(10, 132, 255, 0.05) 0%,
        var(--bg-surface) 50%
    );
}

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

.download-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    background: rgba(48, 209, 88, 0.15);
    border: 1px solid rgba(48, 209, 88, 0.3);
    border-radius: 999px;
    color: #30d158;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-4);
}

.download-badge.coming-soon {
    background: rgba(168, 168, 176, 0.1);
    border-color: rgba(168, 168, 176, 0.25);
    color: var(--text-secondary);
}

.download-card h3 {
    margin-bottom: var(--space-3);
}

.download-card p {
    margin-bottom: var(--space-5);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: 1.6;
}

/* ---------- REQUIREMENTS LIST ---------- */
.req-list {
    max-width: var(--container-narrow);
    margin: 0 auto;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    list-style: none;
}

.req-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: var(--text-sm);
}

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

.req-list .label {
    color: var(--text-secondary);
    font-weight: 500;
}

.req-list .value {
    color: var(--text-primary);
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--text-sm);
}

/* ---------- PROTOCOL STRIP (tag cloud) ---------- */
.protocol-strip {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    justify-content: center;
    max-width: 720px;
    margin: 0 auto;
}

.protocol-tag {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-4);
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: 999px;
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.protocol-tag.accent {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
}

/* ---------- LEGAL / LONG-FORM PAGE ---------- */
.legal-content {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.legal-content h2 {
    margin-top: var(--space-7);
    margin-bottom: var(--space-4);
    font-size: var(--text-xl);
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.legal-content h2:first-of-type {
    margin-top: 0;
}

.legal-content p {
    margin-bottom: var(--space-4);
    line-height: 1.7;
    color: var(--text-secondary);
}

.legal-content ul {
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
    color: var(--text-secondary);
    line-height: 1.7;
}

.legal-content ul li {
    margin-bottom: var(--space-2);
}

.legal-content .meta {
    color: var(--text-muted);
    font-size: var(--text-sm);
    padding-bottom: var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: var(--space-6);
}

.legal-content a {
    color: var(--accent);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-fast);
}

.legal-content a:hover {
    border-bottom-color: var(--accent);
}

/* ---------- FOOTER ---------- */
.footer {
    background: var(--bg-base);
    border-top: 1px solid var(--border-subtle);
    padding: var(--space-8) 0 var(--space-6);
    margin-top: var(--space-9);
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-6);
    padding-bottom: var(--space-7);
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: var(--space-5);
}

.footer-brand img {
    height: 32px;
    margin-bottom: var(--space-3);
}

.footer-brand p {
    font-size: var(--text-sm);
    color: var(--text-muted);
    max-width: 320px;
    line-height: 1.6;
}

.footer-col h4 {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    margin-bottom: var(--space-4);
    font-weight: 600;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-col a {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    font-size: var(--text-xs);
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .footer-top {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

/* ---------- PAIN POINT STRIP ---------- */
.pain-strip {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-5);
}

.pain-card {
    padding: var(--space-5);
    border-left: 2px solid var(--accent);
    background: rgba(10, 132, 255, 0.04);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.pain-card .scenario {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    line-height: 1.35;
}

.pain-card .solution {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

.pain-card .solution strong {
    color: var(--accent);
    font-weight: 600;
}

/* ---------- ICP CARDS ---------- */
.icp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-5);
}

.icp-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: all var(--transition-default);
    position: relative;
}

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

.icp-card .icp-label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent-blue);
    margin-bottom: var(--space-3);
}

.icp-card h3 {
    font-size: var(--text-xl);
    line-height: 1.3;
    margin-bottom: var(--space-4);
}

.icp-card .proof {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    font-family: 'JetBrains Mono', monospace;
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}

/* ---------- NOT-STATEMENT BLOCK (honest differentiation) ---------- */
.not-block {
    max-width: var(--container-narrow);
    margin: 0 auto;
}

.not-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.not-list li {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-4);
    align-items: start;
    padding: var(--space-5);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
}

.not-list .tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.not-list .tag-not {
    background: rgba(255, 59, 48, 0.12);
    color: #ff6a60;
    border: 1px solid rgba(255, 59, 48, 0.3);
}

.not-list .tag-is {
    background: rgba(48, 209, 88, 0.12);
    color: #30d158;
    border: 1px solid rgba(48, 209, 88, 0.3);
}

.not-list .body strong {
    color: var(--text-primary);
    font-weight: 600;
}

.not-list .body {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: 1.6;
}

/* ---------- PRIVACY CALLOUT ---------- */
.privacy-callout {
    max-width: var(--container-narrow);
    margin: 0 auto;
    background: linear-gradient(
        135deg,
        rgba(10, 132, 255, 0.06) 0%,
        rgba(10, 132, 255, 0.01) 100%
    );
    border: 1px solid rgba(10, 132, 255, 0.25);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-5);
    align-items: center;
}

.privacy-callout .icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--accent-blue-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.privacy-callout h4 {
    margin-bottom: var(--space-2);
    font-size: var(--text-lg);
}

.privacy-callout p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

@media (max-width: 640px) {
    .privacy-callout {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .privacy-callout .icon {
        margin: 0 auto;
    }
}

/* ---------- FOUNDER LONG BLOCK ---------- */
.founder-long {
    max-width: var(--container-narrow);
    margin: 0 auto;
}

.founder-long .narrative {
    font-size: var(--text-lg);
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-5);
}

.founder-long .narrative strong {
    color: var(--text-primary);
    font-weight: 600;
}

.founder-long .signature {
    padding-top: var(--space-5);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.founder-long .signature-name {
    font-weight: 600;
    color: var(--text-primary);
}

.founder-long .signature-role {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* ---------- UTILITY ---------- */
.text-center { text-align: center; }
.mt-sm { margin-top: var(--space-4); }
.mt-md { margin-top: var(--space-6); }
.mt-lg { margin-top: var(--space-8); }
.mb-sm { margin-bottom: var(--space-4); }
.mb-md { margin-bottom: var(--space-6); }
.mb-lg { margin-bottom: var(--space-8); }