/* =============================================
   Trace Landing Page - Styles
   Apple-inspired, dark theme, modern design
   ============================================= */

/* Local Font: Neue Haas Unica */
@font-face {
    font-family: 'Neue Haas Unica';
    src: url('assets/fonts/neue-haas-unica/neue-haas-unica-regular.otf') format('opentype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Neue Haas Unica';
    src: url('assets/fonts/neue-haas-unica/neue-haas-unica-regular-italic.otf') format('opentype');
    font-weight: 400;
    font-style: italic;
    font-display: swap;
}

@font-face {
    font-family: 'Neue Haas Unica';
    src: url('assets/fonts/neue-haas-unica/neue-haas-unica-medium.otf') format('opentype');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Neue Haas Unica';
    src: url('assets/fonts/neue-haas-unica/neue-haas-unica-bold.otf') format('opentype');
    font-weight: 600 700;
    font-style: normal;
    font-display: swap;
}

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-bg: #000000;
    --color-bg-secondary: #0d0d0d;
    --color-bg-tertiary: #1a1a1a;
    --color-bg-card: #141414;
    --color-bg-card-hover: #1f1f1f;

    --color-text: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-text-tertiary: #6e6e73;

    --color-accent: #0071e3;
    --color-accent-hover: #0077ed;
    --color-accent-light: rgba(0, 113, 227, 0.1);

    --color-success: #30d158;
    --color-warning: #ffd60a;
    --color-danger: #ff453a;

    /* Storage bar colors */
    --color-apps: #5856d6;
    --color-files: #ff9500;
    --color-media: #ff2d55;
    --color-system: #8e8e93;
    --color-free: #2c2c2e;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    --space-4xl: 8rem;

    /* Typography */
    --font-family: 'Neue Haas Unica', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    /* Border radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.6);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
}

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

a:hover {
    color: var(--color-accent-hover);
}

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

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

/* Section Label */
.section-label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn svg {
    width: 20px;
    height: 20px;
}

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: var(--color-bg-card-hover);
    color: var(--color-text);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: var(--font-size-lg);
}

/* =============================================
   Navigation
   ============================================= */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
}

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

.nav-logo-icon {
    height: 28px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

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

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

.nav-actions {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.nav-download {
    padding: 0.5rem 1.25rem;
    background: transparent;
    color: var(--color-accent) !important;
    border-radius: var(--radius-full);
    border: 1px solid rgba(0, 113, 227, 0.6);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.nav-download:hover {
    background: var(--color-accent-light);
    border-color: rgba(0, 113, 227, 0.8);
    color: var(--color-accent-hover) !important;
}

.nav-cta {
    padding: 0.5rem 1.25rem;
    background: var(--color-accent);
    color: white !important;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.nav-cta:hover {
    background: var(--color-accent-hover);
}

/* =============================================
   Hero Section
   ============================================= */
.hero {
    min-height: 100vh;
    padding: calc(60px + var(--space-3xl)) var(--container-padding) var(--space-3xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.hero-content {
    max-width: 800px;
    margin-bottom: var(--space-3xl);
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-accent-light);
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(0, 113, 227, 0.3);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.hero-requirements {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-lg);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

.trust-item svg {
    width: 24px;
    height: 24px;
    color: var(--color-success);
}

.hero-image {
    width: 100%;
    max-width: 900px;
}

.hero-screenshot {
    width: 100%;
    height: auto;
    display: block;
}

/* Image Comparison Slider */
.image-comparison {
    width: 100%;
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
}

.comparison-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    cursor: ew-resize;
    -webkit-user-drag: none;
}

.comparison-image-after,
.comparison-image-before {
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
    pointer-events: none;
}

.comparison-image-after {
    width: 100%;
    display: block;
}

.comparison-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    overflow: hidden;
    border-right: none;
}

.comparison-image-before {
    width: auto;
    height: 100%;
    max-width: none;
    position: absolute;
    top: 0;
    left: 0;
}

.comparison-slider {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    background: var(--color-text);
    transform: translateX(-50%);
    cursor: ew-resize;
}

.comparison-slider::before,
.comparison-slider::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 20px;
    background: var(--color-text);
    opacity: 0.5;
}

.comparison-slider::before {
    top: 10px;
}

.comparison-slider::after {
    bottom: 10px;
}

.comparison-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
    background: var(--color-bg);
    border: 2px solid var(--color-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.comparison-handle:hover {
    transform: translate(-50%, -50%) scale(1.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.comparison-handle svg {
    width: 20px;
    height: 20px;
    color: var(--color-text);
}

.comparison-caption {
    text-align: center;
    padding: var(--space-sm) 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin: 0;
}

/* =============================================
   Problem Section
   ============================================= */
.problem {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-secondary);
}

.problem-content {
    max-width: 900px;
    margin: 0 auto;
}

.problem-text {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.problem-text h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-md);
}

.problem-text p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.problem-visual {
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.storage-bar {
    display: flex;
    height: 40px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--space-md);
    background: var(--color-free);
}

.storage-segment {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 0;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.storage-segment.apps { background: var(--color-apps); }
.storage-segment.files { background: var(--color-files); }
.storage-segment.media { background: var(--color-media); }
.storage-segment.system {
    background: var(--color-system);
    position: relative;
}
.storage-segment.free {
    background: var(--color-free);
    flex: 1;
}

/* Animated states */
.storage-bar.animated .storage-segment.apps { width: 15%; }
.storage-bar.animated .storage-segment.files { width: 10%; }
.storage-bar.animated .storage-segment.media { width: 8%; }
.storage-bar.animated .storage-segment.system { width: 45%; }

.storage-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: white;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s ease 0.6s;
}

.storage-bar.animated .storage-label {
    opacity: 1;
    animation: wiggle 0.5s ease-in-out 1s 3;
}

@keyframes wiggle {
    0%, 100% { transform: translateX(0) rotate(0); }
    25% { transform: translateX(-3px) rotate(-2deg); }
    75% { transform: translateX(3px) rotate(2deg); }
}

.storage-caption {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

/* =============================================
   Solution Section (3 Pillars)
   ============================================= */
.solution {
    padding: var(--space-4xl) 0;
    text-align: center;
}

.solution h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-3xl);
}

.pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.pillar {
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.pillar:hover {
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.pillar-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-light);
    border-radius: var(--radius-lg);
}

.pillar-icon svg {
    width: 30px;
    height: 30px;
    color: var(--color-accent);
}

.pillar h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
}

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

/* =============================================
   Features Section
   ============================================= */
.features {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-secondary);
}

.features > .container {
    max-width: 1320px;
}

.features > .container > h2 {
    text-align: center;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-3xl);
}

.features > .container > .section-label {
    display: block;
    text-align: center;
}

.feature {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: var(--space-2xl);
    align-items: center;
    margin-bottom: var(--space-4xl);
}

.feature.feature-inspector {
    grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
}

.feature:last-child {
    margin-bottom: 0;
}

.feature-reverse {
    direction: rtl;
}

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

.feature-content h3 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-md);
}

.feature-content p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.feature-content.is-right-aligned {
    text-align: right;
}

.feature-content.is-right-aligned .feature-list li {
    flex-direction: row-reverse;
    justify-content: flex-start;
}

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

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

.feature-list svg {
    width: 20px;
    height: 20px;
    color: var(--color-success);
    flex-shrink: 0;
}

.feature-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.feature-image img {
    width: min(100%, 820px);
    max-width: 100%;
    height: auto;
}

.features .feature .feature-image img {
    --feature-scale: 1;
    --feature-scale-mobile: 1;
    transform: none;
}

.features .feature .feature-image img.feature-image-sm {
    width: min(100%, 740px);
    --feature-scale-mobile: 1;
}

.features .feature .feature-image img.feature-image-xl {
    width: min(100%, 920px);
    --feature-scale-mobile: 1;
}

.features .feature .feature-image img[src*="screenshots/inspectors/"] {
    width: min(100%, 1120px);
    --feature-scale-mobile: 1;
}

.features .feature .feature-image img[src*="screenshots/inspectors/trace-agent.png"] {
    width: min(100%, 680px);
    --feature-scale-mobile: 1;
}

.features .feature.feature-inspector .feature-image img[src*="screenshots/inspectors/"] {
    width: min(100%, 1584px);
    --feature-scale-mobile: 1.06;
}

.features .feature.feature-agent .feature-image img[src*="screenshots/inspectors/trace-agent.png"] {
    width: min(100%, 530px);
    --feature-scale-mobile: 0.9;
}

.feature-image.feature-image-rotator {
    position: relative;
    width: min(100%, 780px);
    aspect-ratio: 1624 / 1520;
}

.feature-image.feature-image-rotator img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0;
    pointer-events: none;
    transition: opacity 560ms ease;
}

.feature-image.feature-image-rotator img:first-child {
    opacity: 1;
}

.feature-image.feature-image-rotator img.is-active {
    opacity: 1;
    z-index: 1;
}

/* Dashboard mockup hotspots */
.trace-dashboard-mockup {
    position: relative;
    max-width: 100%;
    --trace-dashboard-mockup-width: 1696;
    --trace-dashboard-mockup-height: 1984;
}

.trace-dashboard-mockup img {
    display: block;
    max-width: 100%;
    height: auto;
}

.trace-dashboard-hotspots {
    position: absolute;
    inset: 0;
}

.trace-dashboard-hotspot {
    position: absolute;
    left: calc(100% * var(--x, 0) / var(--trace-dashboard-mockup-width));
    top: calc(100% * var(--y, 0) / var(--trace-dashboard-mockup-height));
    width: calc(100% * var(--w, 0) / var(--trace-dashboard-mockup-width));
    height: calc(100% * var(--h, 0) / var(--trace-dashboard-mockup-height));
    border-radius: var(--radius, 16px);
    border: 1px solid transparent;
    background: transparent;
    box-shadow: none;
    cursor: pointer;
    pointer-events: auto;
    transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.trace-dashboard-hotspot:hover,
.trace-dashboard-hotspot:focus-visible {
    border-color: rgba(48, 209, 88, 0.75);
    box-shadow: 0 0 18px rgba(48, 209, 88, 0.22), 0 0 0 1px rgba(48, 209, 88, 0.5) inset;
    background: rgba(48, 209, 88, 0.03);
    outline: none;
}

.trace-dashboard-mockup[data-hotspot-debug='1'] .trace-dashboard-hotspot {
    border-color: rgba(48, 209, 88, 0.92);
    box-shadow: 0 0 0 1px rgba(48, 209, 88, 0.9) inset;
    background: rgba(48, 209, 88, 0.05);
}

.trace-dashboard-tooltip {
    position: absolute;
    top: 0;
    left: 0;
    max-width: min(340px, calc(100% - 2rem));
    padding: 0.75rem 0.9rem;
    background: rgba(18, 18, 18, 0.92);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity 140ms ease, transform 140ms ease;
    pointer-events: none;
    z-index: 10;
}

.trace-dashboard-tooltip.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.trace-dashboard-tooltip::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: var(--trace-tooltip-arrow-x, 50%);
    width: 12px;
    height: 12px;
    background: rgba(18, 18, 18, 0.92);
    border-right: 1px solid rgba(255, 255, 255, 0.14);
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
    transform: translateX(-50%) rotate(45deg);
}

.trace-dashboard-tooltip.is-below::after {
    top: -6px;
    bottom: auto;
    border-right: none;
    border-bottom: none;
    border-left: 1px solid rgba(255, 255, 255, 0.14);
    border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.trace-dashboard-tooltip-title {
    color: var(--color-text);
    font-weight: 600;
    font-size: var(--font-size-sm);
    margin-bottom: 0.35rem;
}

.trace-dashboard-tooltip-body {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

@media (hover: none) and (pointer: coarse) {
    .trace-dashboard-hotspots,
    .trace-dashboard-tooltip {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .trace-dashboard-hotspot,
    .trace-dashboard-tooltip {
        transition: none;
    }

    .feature-image.feature-image-rotator img {
        transition: none;
    }
}

/* =============================================
   Features Grid
   ============================================= */
.features-grid {
    padding: var(--space-4xl) 0;
}

.features-grid h2 {
    text-align: center;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-3xl);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.grid-item {
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.grid-item:hover {
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.grid-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-light);
    border-radius: var(--radius-md);
}

.grid-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-accent);
}

.grid-item h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xs);
}

.grid-item p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* =============================================
   Video Section
   ============================================= */
.video-section {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-secondary);
    text-align: center;
}

.video-section h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-xl);
}

.video-wrapper {
    width: min(100%, 1040px);
    max-width: 1040px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: var(--radius-xl);
}

.video-player {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: inherit;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.34);
    object-fit: contain;
    box-sizing: border-box;
}

.video-player:focus-visible {
    outline: 2px solid rgba(0, 113, 227, 0.8);
    outline-offset: 3px;
}

/* =============================================
   How It Works
   ============================================= */
.how-it-works {
    padding: var(--space-4xl) 0;
    text-align: center;
}

.how-it-works h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-3xl);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.step {
    flex: 1;
    max-width: 280px;
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.step-number {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: white;
    font-size: var(--font-size-xl);
    font-weight: 700;
    border-radius: var(--radius-full);
}

.step h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
}

.step p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.step-arrow {
    display: flex;
    align-items: center;
    padding-top: var(--space-3xl);
}

.step-arrow svg {
    width: 32px;
    height: 32px;
    color: var(--color-text-tertiary);
}

/* =============================================
   What Trace is NOT
   ============================================= */
.not-section {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-secondary);
    text-align: center;
}

.not-section h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-xl);
}

.not-section h2 em {
    color: var(--color-danger);
    font-style: normal;
}

.not-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.not-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-card);
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.not-item svg {
    width: 18px;
    height: 18px;
    color: var(--color-danger);
}

.not-item span {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.not-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

.not-description strong {
    color: var(--color-text);
}

/* =============================================
   Pricing
   ============================================= */
.pricing {
    padding: var(--space-4xl) 0;
    text-align: center;
}

.pricing h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-sm);
}

.pricing-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-3xl);
}

.pricing-note {
    display: block;
    margin-top: var(--space-xs);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: left;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-base);
}

.pricing-card:hover {
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.pricing-card.featured {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, var(--color-bg-card) 0%, rgba(0, 113, 227, 0.1) 100%);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.25rem 1rem;
    background: var(--color-accent);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-sticker {
    position: absolute;
    top: calc(var(--space-xl) + 3.25rem);
    right: var(--space-xl);
    padding: 0.35rem 0.85rem;
    background: transparent;
    color: rgba(48, 209, 88, 0.9);
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border-radius: 0.65rem;
    transform: rotate(30deg);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.14);
    border: 2px solid rgba(48, 209, 88, 0.65);
    user-select: none;
    pointer-events: none;
}

.pricing-header {
    margin-bottom: var(--space-md);
}

.pricing-header h3 {
    font-size: var(--font-size-xl);
    margin-bottom: 0.25rem;
}

.pricing-header p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.pricing-price {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.pricing-price .price {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1;
}

.pricing-price .currency {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-left: 0.25rem;
}

.pricing-price .price-text {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.pricing-features svg {
    width: 18px;
    height: 18px;
    color: var(--color-success);
    flex-shrink: 0;
}

.pricing-card .btn {
    width: 100%;
    margin-top: auto;
}

/* =============================================
   FAQ
   ============================================= */
.faq {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-secondary);
}

.faq h2 {
    text-align: center;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-3xl);
}

.faq .section-label {
    display: block;
    text-align: center;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.faq-item {
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-item h4 {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.faq-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.faq-item strong {
    color: var(--color-text);
}

/* =============================================
   Trust Section
   ============================================= */
.trust-section {
    padding: var(--space-3xl) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.trust-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-xl);
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.trust-badge svg {
    width: 32px;
    height: 32px;
    color: var(--color-success);
}

.trust-badge div {
    text-align: left;
}

.trust-badge strong {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    line-height: 1.24;
}

.trust-badge span {
    display: block;
    margin-top: 0.28rem;
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    line-height: 1.35;
}

/* =============================================
   Final CTA
   ============================================= */
.final-cta {
    padding: var(--space-4xl) 0;
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.final-cta h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-sm);
}

.final-cta p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

/* =============================================
   Footer
   ============================================= */
.footer {
    padding: var(--space-3xl) 0 var(--space-xl);
    background: var(--color-bg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-xl);
}

.footer-brand {
    max-width: 250px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

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

.footer-brand p {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.footer-column h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.footer-column a {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-sm);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.footer-bottom-meta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.footer-language {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.25rem;
}

.footer-language-row {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.footer-language-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.footer-language-select {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-language-select svg {
    width: 16px;
    height: 16px;
    color: var(--color-text-tertiary);
    flex-shrink: 0;
}

.footer-language select {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    background: var(--color-bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: 0.35rem 0.6rem;
}

.footer-language select:focus {
    outline: none;
    border-color: rgba(0, 113, 227, 0.6);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

/* =============================================
   Responsive Design
   ============================================= */
@media (max-width: 1024px) {
    .feature {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .feature.feature-inspector {
        grid-template-columns: 1fr;
        display: flex;
        flex-direction: column;
        gap: var(--space-xl);
    }

    .feature-reverse {
        direction: ltr;
    }

    .feature-content {
        text-align: center;
    }

    .feature-content.is-right-aligned {
        text-align: center;
    }

    .feature.feature-inspector .feature-content {
        text-align: center;
    }

    .feature.feature-inspector .feature-list {
        margin: 0 auto;
    }

    .feature.feature-inspector .feature-image {
        margin-top: 0;
    }

    .feature-content.is-right-aligned .feature-list li {
        flex-direction: row;
        justify-content: flex-start;
    }

    .features .feature .feature-image img {
        width: min(100%, 740px);
        transform: scale(var(--feature-scale-mobile));
    }

    .feature-image.feature-image-rotator {
        width: min(100%, 700px);
    }

    .feature-list {
        display: inline-block;
        text-align: left;
    }
}

@media (max-width: 768px) {
    :root {
        --space-3xl: 4rem;
        --space-4xl: 5rem;
    }

    .nav-links {
        display: none;
    }

    .hero {
        padding-top: calc(60px + var(--space-xl));
    }

    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .features > .container {
        max-width: var(--container-max);
    }

    .feature-image img,
    .features .feature .feature-image img.feature-image-sm,
    .features .feature .feature-image img.feature-image-xl,
    .features .feature .feature-image img[src*="screenshots/inspectors/"],
    .features .feature .feature-image img[src*="screenshots/inspectors/trace-agent.png"] {
        width: min(100%, 100%);
    }

    .features .feature .feature-image img.feature-image-sm,
    .features .feature .feature-image img.feature-image-xl {
        --feature-scale-mobile: 1;
    }

    .features .feature.feature-inspector .feature-image img[src*="screenshots/inspectors/app-inspector.png"],
    .features .feature.feature-inspector .feature-image img[src*="screenshots/inspectors/directory-inspector.png"] {
        --feature-scale-mobile: 1.03;
    }

    .features .feature.feature-agent .feature-image img[src*="screenshots/inspectors/trace-agent.png"] {
        --feature-scale-mobile: 0.88;
    }

    .feature-image.feature-image-rotator {
        width: 100%;
    }

    .steps {
        flex-direction: column;
        align-items: center;
    }

    .step {
        max-width: 100%;
    }

    .step-arrow {
        transform: rotate(90deg);
        padding: var(--space-sm) 0;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .pillars {
        grid-template-columns: 1fr;
    }

    .pricing-cards {
        grid-template-columns: 1fr;
    }

    .trust-badges {
        flex-direction: column;
        align-items: center;
    }

    .not-grid {
        flex-direction: column;
        align-items: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

/* =============================================
   Animations
   ============================================= */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.hero-image {
    animation: fadeInUp 0.8s ease forwards;
}

.hero-image {
    animation-delay: 0.2s;
}

/* Keep all content visible at all times (stable screenshots and mobile scrolling) */
.pillar,
.feature,
.grid-item,
.step,
.pricing-card,
.faq-item {
    opacity: 1;
    transform: none;
}