/* ===== DESIGN TOKENS ===== */
:root {
  --font-display: 'Cabinet Grotesk', 'Trebuchet MS', sans-serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;

  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    7rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  --radius-sm: 0.375rem; --radius-md: 0.5rem; --radius-lg: 0.75rem;
  --radius-xl: 1rem; --radius-full: 9999px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --content-narrow: 640px; --content-default: 960px; --content-wide: 1200px;
}

:root, [data-theme="light"] {
  --color-bg: #f7f6f2; --color-surface: #ffffff; --color-surface-2: #f3f0ec;
  --color-border: #d4d1ca; --color-text: #28251d; --color-text-muted: #7a7974;
  --color-text-faint: #bab9b4; --color-text-inverse: #f9f8f4;
  --color-primary: #01696f; --color-primary-hover: #0c4e54;
  --color-primary-light: #e8f4f5; --color-success: #437a22;
  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.06);
  --shadow-md: 0 4px 12px oklch(0.2 0.01 80 / 0.08);
  --shadow-lg: 0 12px 32px oklch(0.2 0.01 80 / 0.12);
}

[data-theme="dark"] {
  --color-bg: #171614; --color-surface: #1c1b19; --color-surface-2: #22211f;
  --color-border: #393836; --color-text: #cdccca; --color-text-muted: #797876;
  --color-text-faint: #5a5957; --color-text-inverse: #171614;
  --color-primary: #4f98a3; --color-primary-hover: #227f8b;
  --color-primary-light: #1a2f31; --color-success: #6daa45;
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #171614; --color-surface: #1c1b19; --color-surface-2: #22211f;
    --color-border: #393836; --color-text: #cdccca; --color-text-muted: #797876;
    --color-text-faint: #5a5957; --color-text-inverse: #171614;
    --color-primary: #4f98a3; --color-primary-hover: #227f8b;
    --color-primary-light: #1a2f31; --color-success: #6daa45;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
    --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
    --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
  }
}

/* ===== NAV ===== */
.nav { position: sticky; top: 0; z-index: 50; background: oklch(from var(--color-bg) l c h / 0.92); backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: border-color 300ms, box-shadow 300ms; }
.nav--scrolled { border-bottom-color: var(--color-border); box-shadow: var(--shadow-sm); }
.nav__inner { max-width: var(--content-wide); margin: 0 auto; padding: var(--space-4) var(--space-6); display: flex; align-items: center; gap: var(--space-6); }
.nav__logo { display: flex; align-items: center; gap: var(--space-2); font-family: var(--font-display); font-weight: 700; font-size: var(--text-lg); color: var(--color-text); text-decoration: none; }
.nav__logo .logo-bg { color: var(--color-primary); }
.nav__links { display: flex; gap: var(--space-5); margin-left: auto; }
.nav__links a { font-size: var(--text-sm); color: var(--color-text-muted); text-decoration: none; font-weight: 500; }
.nav__links a:hover { color: var(--color-text); }
.nav__actions { display: flex; align-items: center; gap: var(--space-3); }
[data-theme-toggle] { color: var(--color-text-muted); padding: var(--space-2); }
[data-theme-toggle]:hover { color: var(--color-text); }

/* ===== BUTTONS ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; font-family: var(--font-body); font-weight: 600; font-size: var(--text-sm); padding: var(--space-2) var(--space-5); border-radius: var(--radius-md); text-decoration: none; white-space: nowrap; }
.btn--primary { background: var(--color-primary); color: var(--color-text-inverse); }
.btn--primary:hover { background: var(--color-primary-hover); }
.btn--ghost { background: transparent; color: var(--color-text); border: 1px solid var(--color-border); }
.btn--ghost:hover { border-color: var(--color-text-muted); }
.btn--outline { background: transparent; color: var(--color-primary); border: 1px solid var(--color-primary); }
.btn--outline:hover { background: var(--color-primary); color: var(--color-text-inverse); }
.btn--lg { padding: var(--space-3) var(--space-8); font-size: var(--text-base); }

/* ===== HERO ===== */
.hero { max-width: var(--content-wide); margin: 0 auto; padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-6) var(--space-16); display: grid; grid-template-columns: 1fr 1.1fr; gap: var(--space-12); align-items: center; }
.hero__tag { font-size: var(--text-sm); font-weight: 600; color: var(--color-primary); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: var(--space-4); }
.hero__title { font-family: var(--font-display); font-size: var(--text-hero); font-weight: 800; color: var(--color-text); line-height: 1.05; margin-bottom: var(--space-6); }
.hero__sub { font-size: var(--text-base); color: var(--color-text-muted); max-width: 50ch; margin-bottom: var(--space-8); line-height: 1.7; }
.hero__sub strong { color: var(--color-text); font-weight: 600; }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-4); }
.hero__proof { font-size: var(--text-xs); color: var(--color-text-faint); }

/* inbox demo */
.inbox-demo { background: var(--color-surface); border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); overflow: hidden; border: 1px solid var(--color-border); }
.inbox-demo__header { display: flex; align-items: center; gap: var(--space-2); padding: var(--space-3) var(--space-4); background: var(--color-surface-2); border-bottom: 1px solid var(--color-border); }
.inbox-demo__dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.inbox-demo__title { font-size: var(--text-xs); color: var(--color-text-muted); margin-left: var(--space-2); font-family: var(--font-body); font-weight: 500; }
.inbox-demo__row { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-border); font-size: var(--text-sm); }
.inbox-demo__row:last-of-type { border-bottom: none; }
.inbox-demo__badge { font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: var(--radius-full); white-space: nowrap; flex-shrink: 0; }
.badge--resolved { background: #e6f7ee; color: #1a7a3a; }
.badge--routed { background: #eff0f9; color: #4a4a8a; }
[data-theme="dark"] .badge--resolved { background: #1a3325; color: #6daa45; }
[data-theme="dark"] .badge--routed { background: #252538; color: #8888cc; }
.inbox-demo__subject { flex: 1; color: var(--color-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.inbox-demo__credits { color: var(--color-text-faint); font-size: 11px; white-space: nowrap; font-weight: 500; }
.inbox-demo__stats { display: flex; gap: var(--space-4); padding: var(--space-3) var(--space-4); background: var(--color-surface-2); font-size: 11px; color: var(--color-text-muted); flex-wrap: wrap; }

/* ===== SECTIONS ===== */
.section { padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-6); }
.section--alt { background: var(--color-surface-2); }
.section--dark { background: var(--color-primary); }
[data-theme="dark"] .section--dark { background: #0c4e54; }
.section__inner { max-width: var(--content-wide); margin: 0 auto; }
.section__eyebrow { font-size: var(--text-sm); font-weight: 600; color: var(--color-primary); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: var(--space-3); }
.section__title { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 800; color: var(--color-text); margin-bottom: var(--space-4); line-height: 1.1; }
.section__subtitle { font-size: var(--text-base); color: var(--color-text-muted); margin-bottom: var(--space-10); max-width: 56ch; }

/* ===== REASONS (10 CARDS) ===== */
.reasons-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-5); margin-top: var(--space-10); }
.reason-card { padding: var(--space-6) var(--space-8); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); opacity: 0; transform: translateY(16px); transition: opacity 500ms, transform 500ms; }
.reason-card.visible { opacity: 1; transform: translateY(0); }
.reason-card__num { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 800; color: var(--color-primary); opacity: 0.25; display: block; margin-bottom: var(--space-2); }
.reason-card h3 { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 700; margin-bottom: var(--space-2); }
.reason-card p { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.7; }
.reason-card p strong { color: var(--color-text); }

/* ===== HOW IT WORKS (3-STEP CARDS) ===== */
.hiw-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-6); margin-top: var(--space-10); max-width: 800px; }
.hiw-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-8); position: relative; opacity: 0; transform: translateY(16px); transition: opacity 500ms, transform 500ms; }
.hiw-card.visible { opacity: 1; transform: translateY(0); }
.hiw-card--featured { border-color: var(--color-primary); background: var(--color-primary-light); }
.hiw-card__num { position: absolute; top: var(--space-6); right: var(--space-8); font-family: var(--font-display); font-size: var(--text-3xl); font-weight: 800; color: var(--color-primary); opacity: 0.15; line-height: 1; }
.hiw-card__title { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 700; margin-bottom: var(--space-3); padding-right: var(--space-12); }
.hiw-card__desc { font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.7; max-width: 60ch; }
.hiw-card__desc strong { color: var(--color-text); }
.hiw-card__sub { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.7; margin-top: var(--space-4); max-width: 60ch; }

/* Step 2 detail grid */
.hiw-card__details { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); margin-top: var(--space-6); margin-bottom: var(--space-2); padding: var(--space-5); background: var(--color-surface); border-radius: var(--radius-md); border: 1px solid var(--color-border); }
.hiw-detail { text-align: center; }
.hiw-detail__label { display: block; font-size: var(--text-xs); color: var(--color-text-muted); margin-bottom: var(--space-1); }
.hiw-detail__value { display: block; font-family: var(--font-display); font-size: var(--text-lg); font-weight: 800; color: var(--color-primary); }

/* Step 3 channel badges */
.hiw-channels { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.hiw-channel { font-size: var(--text-xs); font-weight: 600; padding: var(--space-1) var(--space-3); border-radius: var(--radius-full); background: var(--color-surface-2); border: 1px solid var(--color-border); color: var(--color-text-muted); }

/* ===== CREDIT EXPLAINER ===== */
.credit-explainer { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); margin: var(--space-10) 0; }
.credit-explainer__card { display: flex; align-items: center; gap: var(--space-4); padding: var(--space-5) var(--space-6); background: oklch(1 0 0 / 0.06); border: 1px solid oklch(1 0 0 / 0.12); border-radius: var(--radius-lg); opacity: 0; transform: translateY(12px); transition: opacity 500ms, transform 500ms; }
.credit-explainer__card.visible { opacity: 1; transform: translateY(0); }
.credit-explainer__icon { font-size: 28px; flex-shrink: 0; }
.credit-explainer__label { display: block; font-size: var(--text-xs); color: var(--color-text-inverse); opacity: 0.7; }
.credit-explainer__value { display: block; font-family: var(--font-display); font-size: var(--text-lg); font-weight: 800; color: var(--color-text-inverse); }

/* ===== PRICING ===== */
.pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); margin-top: var(--space-6); }
.pricing-card { background: oklch(from var(--color-bg) l c h / 0.06); border: 1px solid oklch(1 0 0 / 0.12); border-radius: var(--radius-lg); padding: var(--space-8) var(--space-6); text-align: center; position: relative; color: var(--color-text-inverse); opacity: 0; transform: translateY(16px); transition: opacity 500ms, transform 500ms; }
.pricing-card.visible { opacity: 1; transform: translateY(0); }
.pricing-card--featured { background: var(--color-surface); border-color: var(--color-primary); color: var(--color-text); transform: scale(1.04); box-shadow: var(--shadow-lg); }
.pricing-card--featured.visible { transform: scale(1.04); }
.pricing-card__badge { position: absolute; top: calc(-1 * var(--space-3)); left: 50%; transform: translateX(-50%); background: var(--color-primary); color: var(--color-text-inverse); font-size: 11px; font-weight: 700; padding: 4px 16px; border-radius: var(--radius-full); text-transform: uppercase; letter-spacing: 0.06em; }
[data-theme="dark"] .pricing-card__badge { color: #171614; }
.pricing-card__name { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 700; margin-bottom: var(--space-4); }
.pricing-card__amount { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 800; }
.pricing-card__period { font-size: var(--text-sm); opacity: 0.7; }
.pricing-card__hve { font-size: var(--text-xs); color: var(--color-primary); margin: var(--space-2) 0 var(--space-4); font-weight: 500; }
.pricing-card--featured .pricing-card__hve { color: var(--color-primary); }
.pricing-card__features { margin: var(--space-6) 0; text-align: left; }
.pricing-card__features li { font-size: var(--text-sm); padding: var(--space-2) 0; border-bottom: 1px solid oklch(0.5 0 0 / 0.1); }
.pricing-card__features li:last-child { border-bottom: none; }
.pricing-card .btn { width: 100%; margin-top: var(--space-4); }

/* ===== COMPARISON TABLE ===== */
.compare-table-wrap { overflow-x: auto; margin-top: var(--space-8); }
.compare-table { min-width: 600px; font-size: var(--text-sm); }
.compare-table th { text-align: left; padding: var(--space-3) var(--space-4); font-weight: 600; font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); border-bottom: 2px solid var(--color-border); }
.compare-table td { padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-border); }
.compare-table__highlight td { background: var(--color-primary-light); }
.badge--yes { background: #e6f7ee; color: #1a7a3a; font-size: 11px; font-weight: 600; padding: 2px 10px; border-radius: var(--radius-full); }
[data-theme="dark"] .badge--yes { background: #1a3325; color: #6daa45; }

/* ===== DASHBOARD PREVIEW ===== */
.dashboard-preview { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); margin-top: var(--space-8); }
.dash-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); opacity: 0; transform: translateY(12px); transition: opacity 500ms, transform 500ms; }
.dash-card.visible { opacity: 1; transform: translateY(0); }
.dash-card__label { display: block; font-size: var(--text-xs); color: var(--color-text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: var(--space-2); }
.dash-card__value { display: block; font-family: var(--font-display); font-size: var(--text-xl); font-weight: 800; color: var(--color-text); margin-bottom: var(--space-1); font-variant-numeric: tabular-nums; }
.dash-card__delta { font-size: var(--text-xs); color: var(--color-text-faint); }
.dash-card__delta--up { color: var(--color-success); }

/* ===== VALUE RECEIPT ===== */
.receipt-section { display: grid; grid-template-columns: 1fr 1.1fr; gap: var(--space-12); align-items: center; }
.receipt-section__text p { font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.7; margin-top: var(--space-4); max-width: 48ch; }
.receipt-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.receipt-card__header { padding: var(--space-4) var(--space-6); background: var(--color-primary); color: var(--color-text-inverse); font-family: var(--font-display); font-weight: 700; font-size: var(--text-sm); }
[data-theme="dark"] .receipt-card__header { color: #171614; }
.receipt-card__subheader { padding: var(--space-2) var(--space-6); background: var(--color-surface-2); font-size: var(--text-xs); color: var(--color-text-muted); }
.receipt-card__row { display: flex; justify-content: space-between; padding: var(--space-3) var(--space-6); font-size: var(--text-sm); border-bottom: 1px solid var(--color-border); }
.receipt-card__row:last-of-type { border-bottom: none; }
.receipt-card__row--highlight { font-weight: 700; color: var(--color-primary); padding: var(--space-3) var(--space-6); }
.receipt-card__highlight-text { font-weight: 700; color: var(--color-success); }
.receipt-card__divider { height: 1px; background: var(--color-primary); opacity: 0.2; margin: 0 var(--space-6); }
.receipt-card__footer { padding: var(--space-3) var(--space-6); background: var(--color-surface-2); font-size: var(--text-xs); color: var(--color-text-muted); text-align: center; font-weight: 600; }

/* ===== CTA ===== */
.cta-section { text-align: center; max-width: 640px; margin: 0 auto; }
.cta-section__title { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 800; color: var(--color-text-inverse); margin-bottom: var(--space-4); }
.cta-section__sub { font-size: var(--text-base); color: var(--color-text-inverse); opacity: 0.8; margin-bottom: var(--space-8); }
.cta-section__form { display: flex; gap: var(--space-3); max-width: 480px; margin: 0 auto; }
.cta-input { flex: 1; padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); border: 1px solid oklch(1 0 0 / 0.2); background: oklch(1 0 0 / 0.1); color: var(--color-text-inverse); font-size: var(--text-sm); }
.cta-input::placeholder { color: oklch(1 0 0 / 0.5); }
.cta-section__form .btn--primary { background: var(--color-bg); color: var(--color-primary); }
.cta-section__form .btn--primary:hover { background: var(--color-text-inverse); }
.cta-section__note { font-size: var(--text-xs); color: var(--color-text-inverse); opacity: 0.6; margin-top: var(--space-4); }

/* ===== INVESTOR CARDS ===== */
.investor-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); max-width: 700px; margin: var(--space-8) auto 0; }
.investor-card { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); padding: var(--space-8) var(--space-6); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); text-decoration: none; color: var(--color-text); transition: border-color 180ms, box-shadow 180ms, transform 180ms; }
.investor-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.investor-card__icon { color: var(--color-primary); }
.investor-card__title { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 700; }
.investor-card__desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; text-align: center; max-width: 28ch; }
@media (max-width: 768px) { .investor-links { grid-template-columns: 1fr; max-width: 360px; } }

/* ===== FOOTER ===== */
.footer { padding: var(--space-8) var(--space-6); border-top: 1px solid var(--color-border); }
.footer__inner { max-width: var(--content-wide); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-4); }
.footer__brand { display: flex; align-items: center; gap: var(--space-2); font-family: var(--font-display); font-weight: 700; font-size: var(--text-sm); color: var(--color-text); }
.footer__brand .logo-bg { color: var(--color-primary); }
.footer__links { display: flex; gap: var(--space-5); }
.footer__links a { font-size: var(--text-xs); color: var(--color-text-muted); text-decoration: none; }
.footer__links a:hover { color: var(--color-text); }
.footer__meta { display: flex; gap: var(--space-4); align-items: center; }
.footer__meta span, .footer__meta a { font-size: var(--text-xs); color: var(--color-text-faint); }
.footer__meta a { text-decoration: none; }
.footer__meta a:hover { color: var(--color-text-muted); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero { grid-template-columns: 1fr; gap: var(--space-8); }
  .hero__title { font-size: var(--text-3xl); }
  .nav__links { display: none; }
  .reasons-grid { grid-template-columns: 1fr; }
  .hiw-card__details { grid-template-columns: repeat(2, 1fr); }
  .credit-explainer { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
  .pricing-card--featured { transform: none; }
  .pricing-card--featured.visible { transform: none; }
  .dashboard-preview { grid-template-columns: 1fr 1fr; }
  .receipt-section { grid-template-columns: 1fr; }
  .cta-section__form { flex-direction: column; }
  .footer__inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .dashboard-preview { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; }
  .inbox-demo__stats { flex-direction: column; gap: var(--space-1); }
}