/* =========================================================
   HOMEPAGE STYLES — Constrainly
========================================================= */

/* =========================================================
   SHARED SECTION PRIMITIVES
========================================================= */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
}

.section-title {
    font-size: var(--text-4xl);
}

.section-desc {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 700px;
}

/* Scroll-reveal (toggled by home.js; disabled under reduced-motion) */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* Code token coloring (shared by hero + export panes) */
.c-com { color: var(--text-muted); }
.c-sel { color: var(--text-secondary); }
.c-prop { color: var(--color-primary); }
.c-val { color: var(--color-secondary); }

/* =========================================================
   HERO
========================================================= */
.hero-section {
    position: relative;
    overflow: hidden;
    padding: var(--space-12) var(--space-8) var(--section-space);
    display: grid;
    grid-template-columns: 54% 46%;
    gap: var(--space-12);
    align-items: start;
    max-width: 1400px;
    margin: 0 auto;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse 60% 80% at 15% -10%, var(--color-primary-soft), transparent 60%),
        radial-gradient(ellipse 50% 70% at 95% 10%, rgba(79, 80, 145, 0.10), transparent 60%),
        repeating-linear-gradient(0deg,   var(--border-subtle) 0 1px, transparent 1px 64px),
        repeating-linear-gradient(90deg,  var(--border-subtle) 0 1px, transparent 1px 64px);
    -webkit-mask-image: radial-gradient(ellipse 80% 80% at 40% 30%, #000, transparent 75%);
            mask-image: radial-gradient(ellipse 80% 80% at 40% 30%, #000, transparent 75%);
}

.hero-content,
.hero-visual {
    position: relative;
    z-index: 1;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.hero-headline {
    font-size: clamp(var(--text-4xl), 4.5vw, 3.75rem);
    line-height: var(--leading-tight);
    color: var(--text-primary);
    text-wrap: balance;
}

.hero-headline span {
    color: var(--color-primary);
    white-space: nowrap;
}

.hero-subhead {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero-trust {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
    margin-top: var(--space-2);
}

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

.hero-trust-list {
    display: flex;
    align-items: center;
    gap: var(--space-5);
    list-style: none;
    flex-wrap: wrap;
}

.hero-trust-list li {
    font-size: var(--text-sm);
    font-weight: var(--font-semi-bold);
    color: var(--text-secondary);
    opacity: 0.85;
}

/* Hero entrance (above the fold → pure CSS) */
.hero-content > *,
.hero-visual {
    animation: heroFadeUp 0.7s ease both;
}
.hero-headline { animation-delay: 0.05s; }
.hero-subhead  { animation-delay: 0.15s; }
.hero-actions  { animation-delay: 0.25s; }
.hero-trust    { animation-delay: 0.35s; }
.hero-visual   { animation-delay: 0.30s; }

@keyframes heroFadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: none; }
}

/* =========================================================
   HERO / MOCKUP WINDOW
========================================================= */
.hero-visual {
    border-radius: 14px;
    background: var(--surface-secondary);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.mockup-window {
    display: flex;
    flex-direction: column;
    width: 100%;
    background: var(--bg-primary);
}

.mockup-header {
    height: 40px;
    background: var(--surface-primary);
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    padding: 0 var(--space-4);
    gap: var(--space-4);
}

.mockup-dots {
    display: flex;
    gap: 6px;
}

.mockup-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-secondary);
}

.mockup-title {
    font-size: var(--text-xs);
    color: var(--text-muted);
    font-family: monospace;
    flex: 1;
    text-align: center;
    margin-right: 46px;
}

.mockup-tabs {
    display: flex;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-4) 0;
    background: var(--surface-primary);
    border-bottom: 1px solid var(--border-primary);
}

.mockup-tab {
    font-size: var(--text-xs);
    font-weight: var(--font-semi-bold);
    color: var(--text-muted);
    padding: var(--space-2) var(--space-3);
    border-bottom: 2px solid transparent;
}

.mockup-tab.is-active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.mockup-code {
    position: relative;
    height: 248px;
    background: var(--surface-primary);
}

.code-pane {
    position: absolute;
    inset: 0;
    margin: 0;
    padding: var(--space-6);
    font-family: monospace;
    font-size: var(--text-sm);
    line-height: 1.8;
    color: var(--text-secondary);
    opacity: 0;
    transition: opacity 0.5s ease;
    white-space: pre-wrap;
    overflow: hidden;
}

.code-pane.is-active {
    opacity: 1;
}

/* =========================================================
   PROBLEM
========================================================= */
.problem-section {
    padding: var(--section-space) var(--space-8);
    background: linear-gradient(to bottom, var(--surface-primary), var(--bg-secondary));
    border-top: 1px solid var(--border-primary);
    border-bottom: 1px solid var(--border-primary);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.problem-card {
    padding: var(--space-10);
    background: var(--surface-primary);
    border-radius: 16px;
    border: 1px solid var(--border-primary);
    box-shadow:
        0 1px 2px var(--shadow-color),
        0 14px 32px -14px var(--shadow-color);
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.problem-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
}

/* =========================================================
   HOW IT WORKS
========================================================= */
.workflow-section {
    padding: var(--section-space) var(--space-8);
}

.workflow-steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    margin-top: var(--space-12);
}

.workflow-steps::before {
    content: '';
    position: absolute;
    top: 32px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--color-primary), transparent);
    opacity: 0.3;
    z-index: 0;
}

.workflow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-6);
    position: relative;
    z-index: 1;
    flex: 1;
    padding: 0 var(--space-4);
}

.step-number {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--surface-primary);
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    box-shadow: 0 0 0 8px var(--bg-primary);
}

/* =========================================================
   BUILDERS
========================================================= */
.builders-section {
    padding: var(--section-space) var(--space-8);
    background: linear-gradient(to bottom, var(--bg-secondary), var(--surface-primary));
    border-top: 1px solid var(--border-primary);
}

.builders-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.builder-card {
    padding: var(--space-8);
    background: var(--surface-primary);
    border-radius: 16px;
    border: 1px solid var(--border-primary);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    box-shadow:
        0 1px 2px var(--shadow-color),
        0 10px 24px -16px var(--shadow-color);
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.builder-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow:
        0 2px 4px var(--shadow-color),
        0 20px 40px -12px var(--shadow-color);
}

.builder-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.builder-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
}

.builder-name {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

.builder-cat {
    margin-top: var(--space-2);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

.builders-roadmap {
    margin-top: var(--space-12);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--text-sm);
}

.builders-roadmap i {
    color: var(--color-primary);
    margin-right: var(--space-2);
}

/* =========================================================
   AI-READY EXPORT
========================================================= */
.export-section {
    padding: var(--section-space) var(--space-8);
}

.export-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.export-copy {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

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

.export-points li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-secondary);
}

.export-points i {
    color: var(--color-primary);
    font-size: var(--text-sm);
}

.export-panel {
    border-radius: 14px;
    border: 1px solid var(--border-primary);
    background: var(--surface-primary);
    box-shadow:
        0 2px 6px var(--shadow-color),
        0 18px 40px -16px var(--shadow-color);
    overflow: hidden;
}

.export-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-4) 0;
    border-bottom: 1px solid var(--border-primary);
    background: var(--surface-secondary);
}

.export-tab {
    font-size: var(--text-sm);
    font-weight: var(--font-semi-bold);
    color: var(--text-muted);
    padding: var(--space-2) var(--space-3);
    border-bottom: 2px solid transparent;
    transition: color var(--transition-fast);
}

.export-tab:hover { color: var(--text-secondary); }

.export-tab.is-active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.export-body {
    background: var(--bg-primary);
}

.export-pane {
    display: none;
    margin: 0;
    padding: var(--space-6);
    font-family: monospace;
    font-size: var(--text-sm);
    line-height: 1.8;
    color: var(--text-secondary);
    white-space: pre-wrap;
    min-height: 168px;
}

.export-pane.is-active {
    display: block;
}

/* =========================================================
   FINAL CTA
========================================================= */
.cta-section {
    padding: var(--section-space) var(--space-8);
}

.cta-band {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
    padding: var(--section-space) var(--space-8);
    border-radius: 24px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-5);
}

.cta-title {
    font-size: var(--text-4xl);
    color: #fff;
}

.cta-sub {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.88);
    max-width: 560px;
}

.cta-btn {
    background: #fff;
    color: var(--color-primary);
    font-weight: var(--font-bold);
    margin-top: var(--space-2);
}

.cta-btn:hover {
    background: rgba(255, 255, 255, 0.9);
}

/* =========================================================
   RESPONSIVE
========================================================= */
@media (max-width: 1024px) {
    .hero-section {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content { align-items: center; }
    .hero-actions, .hero-trust { justify-content: center; }
    .problem-grid { grid-template-columns: repeat(2, 1fr); }
    .builders-grid { grid-template-columns: repeat(2, 1fr); }
    .export-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .problem-grid,
    .builders-grid {
        grid-template-columns: 1fr;
    }
    .workflow-steps {
        flex-direction: column;
        align-items: center;
        gap: var(--space-8);
    }
    .workflow-steps::before { display: none; }
}

/* =========================================================
   REDUCED MOTION
========================================================= */
@media (prefers-reduced-motion: reduce) {
    .hero-content > *,
    .hero-visual {
        animation: none;
    }
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .code-pane {
        transition: none;
    }
    .builder-card:hover {
        transform: none;
    }
}