/* ═══════════════════════════════════════════════════════════
   FloorRadar — /demo marketing page
   Cohesive with the app's design system (indigo primary, Inter font, light surfaces)
   while introducing some atmosphere that the in-app shell doesn't need.
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --primary: #6366F1;
    --primary-hover: #4F46E5;
    --primary-deep: #4338CA;
    --bg-base: #FFFFFF;
    --bg-soft: #F8F9FB;
    --bg-muted: #F1F2F7;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-tertiary: #64748B;
    --text-muted: #94A3B8;
    --border-subtle: rgba(15, 23, 42, 0.08);
    --border-focus: rgba(99, 102, 241, 0.35);
    --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 16px rgba(15, 23, 42, 0.06);
    --shadow-cta: 0 4px 14px rgba(99, 102, 241, 0.4);
    --shadow-cta-hover: 0 6px 20px rgba(99, 102, 241, 0.55);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg-base);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--primary-hover); }

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

/* ─── Top bar ─────────────────────────────────────────── */
.topbar {
    position: relative; z-index: 10;
    display: flex; align-items: center; justify-content: space-between;
    padding: 18px 28px;
    max-width: 1200px;
    margin: 0 auto;
}
.brand {
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--text-primary); font-weight: 700; font-size: 1.05rem;
    letter-spacing: -0.01em;
}
.brand-icon { font-size: 1.35rem; line-height: 1; }
.brand-tld { color: var(--text-tertiary); font-weight: 600; }
.signin-link {
    font-size: 0.9rem; font-weight: 600; padding: 8px 16px;
    border: 1px solid var(--border-subtle); border-radius: 8px;
    color: var(--text-secondary); background: var(--bg-base);
    transition: all 0.15s;
}
.signin-link:hover {
    color: var(--primary); border-color: var(--border-focus);
    background: var(--bg-soft);
}

/* ─── Hero ─────────────────────────────────────────────── */
.hero {
    position: relative;
    overflow: hidden;
    padding: 56px 28px 88px;
    isolation: isolate;
}
.hero-bg {
    position: absolute; inset: 0; z-index: -1;
    pointer-events: none;
}
.hero-gradient {
    position: absolute; inset: 0;
    background:
      radial-gradient(ellipse 80% 60% at 30% 0%, rgba(99, 102, 241, 0.18), transparent 60%),
      radial-gradient(ellipse 60% 50% at 80% 20%, rgba(124, 92, 252, 0.12), transparent 70%),
      linear-gradient(180deg, #FFFFFF 0%, #FAFBFE 100%);
}
.hero-grid {
    position: absolute; inset: 0; opacity: 0.5;
    background-image:
      linear-gradient(rgba(99, 102, 241, 0.06) 1px, transparent 1px),
      linear-gradient(90deg, rgba(99, 102, 241, 0.06) 1px, transparent 1px);
    background-size: 64px 64px;
    -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 30%, #000 30%, transparent 80%);
    mask-image: radial-gradient(ellipse 60% 50% at 50% 30%, #000 30%, transparent 80%);
}

.hero-inner {
    max-width: 760px; margin: 0 auto;
    text-align: center;
    padding: 32px 0 0;
}
.eyebrow {
    display: inline-block;
    font-size: 0.78rem; font-weight: 600; letter-spacing: 0.06em;
    text-transform: uppercase; color: var(--primary-deep);
    background: rgba(99, 102, 241, 0.08); border: 1px solid rgba(99, 102, 241, 0.16);
    padding: 6px 12px; border-radius: 100px;
    margin-bottom: 28px;
}
.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 800; letter-spacing: -0.025em; line-height: 1.05;
    margin-bottom: 20px;
    color: var(--text-primary);
}
.hero-title-accent {
    background: linear-gradient(135deg, var(--primary) 0%, #8B5CF6 100%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    color: var(--text-secondary);
    max-width: 580px; margin: 0 auto 36px;
}

/* Form */
.waitlist-form {
    display: flex; gap: 8px; flex-wrap: wrap;
    max-width: 480px; margin: 0 auto;
    background: var(--bg-base);
    border: 1px solid var(--border-subtle); border-radius: 12px;
    padding: 6px;
    box-shadow: var(--shadow-card);
}
.waitlist-form input[type="email"] {
    flex: 1; min-width: 200px;
    border: none; outline: none;
    background: transparent;
    padding: 12px 14px;
    font-family: inherit; font-size: 0.95rem;
    color: var(--text-primary);
}
.waitlist-form input[type="email"]::placeholder {
    color: var(--text-muted);
}
.waitlist-form input[type="email"]:focus {
    background: var(--bg-soft); border-radius: 8px;
}
.honeypot {
    position: absolute !important;
    left: -9999px !important; top: -9999px !important;
    width: 1px; height: 1px; opacity: 0; pointer-events: none;
}

.waitlist-btn {
    position: relative;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: white; border: none; border-radius: 8px;
    padding: 12px 22px; font-family: inherit;
    font-size: 0.95rem; font-weight: 600; letter-spacing: 0.01em;
    cursor: pointer; transition: all 0.18s;
    box-shadow: var(--shadow-cta);
    min-width: 160px;
    display: inline-flex; align-items: center; justify-content: center;
}
.waitlist-btn:hover { box-shadow: var(--shadow-cta-hover); transform: translateY(-1px); }
.waitlist-btn:active { transform: translateY(0); }
.waitlist-btn:disabled {
    opacity: 0.6; cursor: not-allowed; transform: none; box-shadow: var(--shadow-cta);
}
.waitlist-btn[data-loading="true"] .btn-label { visibility: hidden; }
.btn-spinner {
    display: none;
    width: 16px; height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top-color: #fff;
    border-radius: 50%;
    position: absolute;
    animation: spin 0.6s linear infinite;
}
.waitlist-btn[data-loading="true"] .btn-spinner { display: block; }
@keyframes spin { to { transform: rotate(360deg); } }

.waitlist-msg {
    margin-top: 16px;
    font-size: 0.92rem;
    min-height: 1.4em;
    color: var(--text-secondary);
}
.waitlist-msg[data-state="success"] {
    color: #15803D;
    font-weight: 600;
}
.waitlist-msg[data-state="error"] {
    color: #B91C1C;
}

/* Optional persona + WTP capture (collapsible <details>) */
.waitlist-extras {
    max-width: 480px;
    margin: 18px auto 0;
    text-align: left;
    background: var(--bg-soft);
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    padding: 12px 14px;
    font-size: 0.92rem;
}
.waitlist-extras summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
    padding: 4px 0;
    user-select: none;
}
.waitlist-extras summary:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 3px;
    border-radius: 4px;
}
.waitlist-extras-hint {
    font-weight: 400;
    color: var(--text-tertiary);
    font-size: 0.86rem;
    margin-left: 4px;
}
.waitlist-extras[open] summary {
    margin-bottom: 12px;
}

.waitlist-fieldset {
    border: none;
    margin-top: 14px;
}
.waitlist-fieldset:first-of-type {
    margin-top: 4px;
}
.waitlist-fieldset legend {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-bottom: 8px;
    padding: 0;
}

.waitlist-radio-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 10px;
}

.waitlist-radio {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    cursor: pointer;
    padding: 6px 8px;
    border-radius: 6px;
    transition: background 0.12s;
    line-height: 1.35;
}
.waitlist-radio:hover {
    background: var(--bg-muted);
}
.waitlist-radio input[type="radio"] {
    margin-top: 3px;
    flex-shrink: 0;
    accent-color: var(--primary);
}
.waitlist-radio input[type="radio"]:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}
.waitlist-radio span {
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* Mobile: stack radio grid into a single column on narrow screens */
@media (max-width: 600px) {
    .waitlist-radio-grid {
        grid-template-columns: 1fr;
    }
    .waitlist-extras {
        margin-top: 14px;
        padding: 10px 12px;
    }
    .waitlist-radio span {
        font-size: 0.92rem;
    }
}

.hero-foot {
    margin-top: 28px;
    color: var(--text-tertiary); font-size: 0.85rem;
}

/* ─── Features ─────────────────────────────────────────── */
.features {
    padding: 72px 28px 96px;
    background: var(--bg-soft);
    border-top: 1px solid var(--border-subtle);
}
.features-inner {
    max-width: 1100px; margin: 0 auto;
}
.features-title {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 700; letter-spacing: -0.015em;
    text-align: center; margin-bottom: 48px;
    color: var(--text-primary);
}
.features-grid {
    display: grid; gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.feature {
    background: var(--bg-base);
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    padding: 28px 24px;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.feature:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
    border-color: rgba(99, 102, 241, 0.18);
}
.feature-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-radius: 10px;
    margin-bottom: 16px;
}
.feature-icon svg { width: 22px; height: 22px; }
.feature h3 {
    font-size: 1.1rem; font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}
.feature p {
    color: var(--text-secondary);
    font-size: 0.93rem;
    line-height: 1.6;
}

/* ─── Footer ───────────────────────────────────────────── */
.footer {
    padding: 24px 28px 32px;
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-base);
}
.footer-inner {
    max-width: 1200px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 12px;
    color: var(--text-tertiary); font-size: 0.85rem;
}
.footer-brand { font-weight: 600; color: var(--text-secondary); }
.footer-meta { display: inline-flex; align-items: center; gap: 10px; }
.footer-sep { color: var(--text-muted); }

/* ─── Responsive ───────────────────────────────────────── */
@media (max-width: 600px) {
    .topbar { padding: 14px 18px; }
    .topbar-nav { gap: 0; }
    .topbar-nav a:not(.signin-link) { display: none; }
    .hero { padding: 36px 18px 64px; }
    .features { padding: 56px 18px 72px; }
    .footer-inner { flex-direction: column; align-items: flex-start; }
    .waitlist-form { flex-direction: column; }
    .waitlist-form input[type="email"] { width: 100%; }
    .waitlist-btn { width: 100%; }
}