/* ============================================================
   SIGNAL & SERVE — Coming Soon
   Design tokens + component styles
   ============================================================ */

:root {
  /* Type scale */
  --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, 3.25rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.75rem);
  --text-hero: clamp(2.75rem, 0.5rem + 6vw, 6.5rem);

  /* Spacing (4px system) */
  --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 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  /* Motion */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1180px;

  /* Fonts */
  --font-display: 'Source Serif 4', 'Georgia', serif;
  --font-body: 'Source Sans 3', 'Helvetica Neue', sans-serif;
}

/* ---------------- Light mode (default) — cream & navy ---------------- */
:root,
[data-theme='light'] {
  --color-bg: #faf8f4;
  --color-surface: #fffdf9;
  --color-surface-2: #f3efe6;
  --color-surface-offset: #ede7d9;
  --color-border: oklch(0.35 0.03 80 / 0.14);
  --color-divider: oklch(0.35 0.03 80 / 0.1);

  --color-text: #23262b;
  --color-text-muted: #62666d;
  --color-text-faint: #9a9d9c;
  --color-text-inverse: #faf8f4;

  --color-navy: #0f2a44;
  --color-navy-2: #0a1e33;

  --color-primary: #1f6f5c;
  --color-primary-hover: #17594a;
  --color-primary-active: #124639;
  --color-primary-highlight: #e2ede9;

  --color-gold: #a97e3f;
  --color-gold-highlight: #f0e5d0;

  --color-error: #a13544;
  --color-error-highlight: #f2dfe1;
  --color-success: #2f6f45;

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 70 / 0.08);
  --shadow-md: 0 6px 20px oklch(0.2 0.02 70 / 0.1);
  --shadow-lg: 0 20px 48px oklch(0.2 0.02 70 / 0.16);
}

/* ---------------- Dark mode — deep navy & cream ---------------- */
[data-theme='dark'] {
  --color-bg: #0a1e33;
  --color-surface: #0f2a44;
  --color-surface-2: #12314c;
  --color-surface-offset: #163a58;
  --color-border: oklch(0.95 0.01 80 / 0.12);
  --color-divider: oklch(0.95 0.01 80 / 0.08);

  --color-text: #f4f0e6;
  --color-text-muted: #b7c2cc;
  --color-text-faint: #7c8994;
  --color-text-inverse: #0a1e33;

  --color-navy: #f4f0e6;
  --color-navy-2: #ffffff;

  --color-primary: #4bab92;
  --color-primary-hover: #64c2a9;
  --color-primary-active: #3a8d78;
  --color-primary-highlight: #16382f;

  --color-gold: #d7b06e;
  --color-gold-highlight: #3a3220;

  --color-error: #dd7c8c;
  --color-error-highlight: #3d2126;
  --color-success: #7cbf8f;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 6px 20px oklch(0 0 0 / 0.35);
  --shadow-lg: 0 24px 56px oklch(0 0 0 / 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0a1e33;
    --color-surface: #0f2a44;
    --color-surface-2: #12314c;
    --color-surface-offset: #163a58;
    --color-border: oklch(0.95 0.01 80 / 0.12);
    --color-divider: oklch(0.95 0.01 80 / 0.08);
    --color-text: #f4f0e6;
    --color-text-muted: #b7c2cc;
    --color-text-faint: #7c8994;
    --color-text-inverse: #0a1e33;
    --color-navy: #f4f0e6;
    --color-navy-2: #ffffff;
    --color-primary: #4bab92;
    --color-primary-hover: #64c2a9;
    --color-primary-active: #3a8d78;
    --color-primary-highlight: #16382f;
    --color-gold: #d7b06e;
    --color-gold-highlight: #3a3220;
    --color-error: #dd7c8c;
    --color-error-highlight: #3d2126;
    --color-success: #7cbf8f;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
    --shadow-md: 0 6px 20px oklch(0 0 0 / 0.35);
    --shadow-lg: 0 24px 56px oklch(0 0 0 / 0.5);
  }
}

/* ============================================================
   Layout primitives
   ============================================================ */

.wrap {
  width: min(100% - var(--space-8), var(--content-wide));
  margin-inline: auto;
}
.wrap--narrow {
  width: min(100% - var(--space-8), var(--content-narrow));
  margin-inline: auto;
}
.wrap--default {
  width: min(100% - var(--space-8), var(--content-default));
  margin-inline: auto;
}

@media (min-width: 640px) {
  .wrap,
  .wrap--narrow,
  .wrap--default {
    width: min(100% - var(--space-16), var(--content-wide));
  }
  .wrap--narrow {
    width: min(100% - var(--space-16), var(--content-narrow));
  }
  .wrap--default {
    width: min(100% - var(--space-16), var(--content-default));
  }
}

section {
  position: relative;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 100;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  transition: top var(--transition-interactive);
}
.skip-link:focus {
  top: var(--space-4);
}

/* ============================================================
   Header
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding-block: var(--space-4);
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-divider);
}

.site-header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.brand__mark {
  width: 30px;
  height: 30px;
  color: var(--color-primary);
  flex-shrink: 0;
}
.brand__word {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-lg);
  letter-spacing: 0.01em;
  line-height: 1;
  white-space: nowrap;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}
.theme-toggle svg {
  width: 18px;
  height: 18px;
}

/* ============================================================
   Hero
   ============================================================ */

.hero {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-12), 8vw, var(--space-24));
}

.hero__grid {
  display: grid;
  gap: var(--space-10);
  align-items: start;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-16);
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}
.eyebrow::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--color-gold);
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-hero);
  line-height: 1.04;
  color: var(--color-navy);
  max-width: 16ch;
}

[data-theme='dark'] .hero__title {
  color: var(--color-text);
}

.hero__lede {
  margin-top: var(--space-6);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 46ch;
  font-weight: 400;
}

.hero__byline {
  margin-top: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}
.hero__byline strong {
  color: var(--color-text-muted);
  font-weight: 600;
}
.hero__byline .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-gold);
  flex-shrink: 0;
}

/* Signup card */
.signup-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-6), 4vw, var(--space-10));
  box-shadow: var(--shadow-lg);
}

.signup-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--space-2);
}
[data-theme='dark'] .signup-card__title {
  color: var(--color-text);
}

.signup-card__copy {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.field label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}
.field input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text);
  font-size: var(--text-base);
}
.field input::placeholder {
  color: var(--color-text-faint);
}
.field input:focus-visible {
  border-color: var(--color-primary);
  outline: 2px solid transparent;
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 25%, transparent);
}
.field input[aria-invalid='true'],
.field input[aria-invalid='true']:focus-visible {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-error) 25%, transparent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  min-height: 44px;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-primary:active {
  transform: translateY(0);
  background: var(--color-primary-active);
}
.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.form-message {
  font-size: var(--text-xs);
  min-height: 1.2em;
  color: var(--color-text-muted);
}
.form-message[data-state='error'] {
  color: var(--color-error);
}
.form-message[data-state='success'] {
  color: var(--color-success);
}

.signup-card__note {
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.success-state {
  display: none;
  align-items: flex-start;
  gap: var(--space-3);
}
.success-state.is-visible {
  display: flex;
}
.success-state__icon {
  width: 22px;
  height: 22px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}
.success-state p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.success-state strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-base);
  color: var(--color-navy);
  margin-bottom: var(--space-1);
}
[data-theme='dark'] .success-state strong {
  color: var(--color-text);
}

/* ============================================================
   What's coming
   ============================================================ */

.coming {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  border-top: 1px solid var(--color-divider);
}

.section-heading {
  max-width: 56ch;
  margin-bottom: var(--space-12);
}
.section-heading__eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}
.section-heading h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-navy);
}
[data-theme='dark'] .section-heading h2 {
  color: var(--color-text);
}
.section-heading p {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

.offer-grid {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 860px) {
  .offer-grid {
    grid-template-columns: 1.3fr 1fr;
    align-items: stretch;
  }
}

.offer-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-6), 4vw, var(--space-10));
  display: flex;
  flex-direction: column;
}

.offer-card--feature {
  /* Always a dark navy surface in both themes, so text uses fixed
     light-on-dark tokens instead of --color-text-inverse, which flips
     to dark navy in dark mode and would wash out against this card. */
  --oncard-text: #f6f3ea;
  --oncard-muted: rgba(246, 243, 234, 0.78);
  --oncard-faint: rgba(246, 243, 234, 0.6);
  --oncard-border: rgba(246, 243, 234, 0.18);
  background: linear-gradient(160deg, var(--color-navy) 0%, var(--color-navy-2) 100%);
  color: var(--oncard-text);
  border-color: transparent;
}
[data-theme='dark'] .offer-card--feature {
  background: linear-gradient(160deg, var(--color-surface-2) 0%, var(--color-bg) 100%);
}

.offer-card__tag {
  display: inline-flex;
  width: fit-content;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-4);
}
.offer-card--feature .offer-card__tag {
  color: #d7b06e;
}

.offer-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-navy);
}
[data-theme='dark'] .offer-card h3 {
  color: var(--color-text);
}
.offer-card--feature h3,
[data-theme='dark'] .offer-card--feature h3 {
  color: var(--oncard-text);
}

.offer-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  flex-grow: 1;
}
.offer-card--feature p {
  color: var(--oncard-muted);
}

.offer-card__meta {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.offer-card--feature .offer-card__meta {
  border-top-color: var(--oncard-border);
  color: var(--oncard-faint);
}

/* ============================================================
   Philosophy / about
   ============================================================ */

.philosophy {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  border-top: 1px solid var(--color-divider);
}

.philosophy__grid {
  display: grid;
  gap: var(--space-10);
}

@media (min-width: 860px) {
  .philosophy__grid {
    grid-template-columns: 0.95fr 1.05fr;
    gap: var(--space-16);
    align-items: center;
  }
}

.philosophy__quote {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1.3;
  color: var(--color-navy);
  font-weight: 500;
}
[data-theme='dark'] .philosophy__quote {
  color: var(--color-text);
}
.philosophy__quote span {
  color: var(--color-primary);
}

.philosophy__body p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
}
.philosophy__body p:last-child {
  margin-bottom: 0;
}

.philosophy__signoff {
  margin-top: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.philosophy__signoff-mark {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-primary);
}
.philosophy__signoff-role {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ============================================================
   Footer
   ============================================================ */

.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-10);
}

.site-footer__row {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .site-footer__row {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.site-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-muted);
}
.site-footer__brand .brand__mark {
  width: 20px;
  height: 20px;
}
.site-footer__brand span {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.site-footer__meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ============================================================
   Scroll reveal
   ============================================================ */

.reveal {
  opacity: 1;
}
@supports (animation-timeline: view()) {
  .reveal {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 45%;
  }
}
@keyframes reveal-fade {
  to {
    opacity: 1;
  }
}