/* ===========================================================
   base.css — reset & foundational rules
=========================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

ul[role='list'] {
  list-style: none;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3,
h4 {
  text-wrap: balance;
  line-height: 1.1;
}

p,
li {
  text-wrap: pretty;
}

::selection {
  background: oklch(from var(--color-accent) l c h / 0.25);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

a,
button,
input {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

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

/* ===========================================================
   TOKENS — Trevisan Consulting palette: plum purple + blush
=========================================================== */
:root,
[data-theme='light'] {
  --color-bg: #fdf6fb;
  --color-surface: #ffffff;
  --color-surface-2: #faeef7;
  --color-surface-offset: #f3ddee;
  --color-divider: #ecd7e6;
  --color-border: #ddb9d5;

  --color-text: #241120;
  --color-text-muted: #6f5569;
  --color-text-faint: #a488a0;
  --color-text-inverse: #fdf6fb;

  --color-ink: #3a1636;
  --color-ink-2: #4c1e47;

  --color-accent: #6d2d68;
  --color-accent-hover: #58234f;
  --color-accent-active: #471c40;
  --color-accent-highlight: #f0d6ea;

  --color-success: #3f7a4f;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.15 0.02 260 / 0.08);
  --shadow-md: 0 8px 24px oklch(0.15 0.02 260 / 0.1);
  --shadow-lg: 0 20px 48px oklch(0.15 0.02 260 / 0.16);

  --content-narrow: 640px;
  --content-default: 980px;
  --content-wide: 1240px;

  --font-display: 'Cabinet Grotesk', 'Georgia', serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;
}

[data-theme='dark'] {
  --color-bg: #1b0d18;
  --color-surface: #281323;
  --color-surface-2: #31172c;
  --color-surface-offset: #3b1c35;
  --color-divider: #4a2643;
  --color-border: #5c3253;

  --color-text: #f5e9f2;
  --color-text-muted: #c6a3bd;
  --color-text-faint: #8c6a83;
  --color-text-inverse: #241120;

  --color-ink: #130a11;
  --color-ink-2: #1b0d18;

  --color-accent: #c874bd;
  --color-accent-hover: #d489ca;
  --color-accent-active: #e09fd6;
  --color-accent-highlight: #3b1c35;

  --color-success: #6fbb7f;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 8px 24px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 20px 48px oklch(0 0 0 / 0.5);
}

/* type scale */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.3vw, 0.9375rem);
  --text-base: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.1vw, 2rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.2vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1.2rem + 3.6vw, 4.5rem);

  --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;
}

/* ===========================================================
   LAYOUT PRIMITIVES
=========================================================== */
.wrap {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.wrap--narrow {
  max-width: var(--content-narrow);
}
.wrap--default {
  max-width: var(--content-default);
}

section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  flex-shrink: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
}

/* ===========================================================
   HEADER
=========================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
  transition:
    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.header--hidden {
  transform: translateY(-100%);
}
.header--scrolled {
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-text);
  text-decoration: none;
}
.brand-mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 50%;
  color: var(--color-accent);
}
.brand-name {
  line-height: 1.15;
  white-space: nowrap;
}
.brand-name small {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}
.theme-toggle:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
}

/* ===========================================================
   BUTTONS
=========================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  white-space: nowrap;
  text-decoration: none;
}
.btn--primary {
  background: var(--color-accent);
  color: #fdf6fb;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--primary:active {
  background: var(--color-accent-active);
  transform: translateY(0);
}
.btn--ghost {
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ===========================================================
   HERO
=========================================================== */
.hero {
  position: relative;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-12), 6vw, var(--space-20));
  overflow: hidden;
}
.hero-copy {
  max-width: 62ch;
  margin-inline: auto;
  text-align: center;
}
.hero-copy h1 {
  font-size: var(--text-3xl);
  font-weight: 650;
  margin-block: var(--space-5) var(--space-6);
  letter-spacing: -0.01em;
}
.hero-copy h1 em {
  font-style: normal;
  color: var(--color-accent);
}
.hero-lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}
.hero-banner {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-10);
}
.hero-banner img {
  width: 100%;
  height: auto;
  display: block;
}
.hero-footer {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
}
.hero-dates {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}
.hero-date-item {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}
.hero-date-item .num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 650;
  color: var(--color-ink);
}
[data-theme='dark'] .hero-date-item .num {
  color: var(--color-text);
}
.hero-date-item .label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Waitlist form */
.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 420px;
  margin-inline: auto;
}
.waitlist-form .name-row {
  display: flex;
  gap: var(--space-3);
}
.waitlist-form .name-row input {
  flex: 1 1 0;
  min-width: 0;
}
.waitlist-form input[type='text'],
.waitlist-form input[type='email'] {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  font-size: var(--text-sm);
  color: var(--color-text);
}
.waitlist-form input::placeholder {
  color: var(--color-text-faint);
}
.waitlist-form input:focus-visible {
  border-color: var(--color-accent);
}
.waitlist-form button {
  width: 100%;
}
.form-note {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.form-success {
  display: none;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  background: color-mix(in oklab, var(--color-success) 12%, var(--color-surface));
  border: 1px solid color-mix(in oklab, var(--color-success) 35%, var(--color-border));
  color: var(--color-text);
  font-size: var(--text-sm);
  max-width: 560px;
}
.form-success.is-visible {
  display: flex;
}
.form-success svg {
  flex-shrink: 0;
  color: var(--color-success);
}
.waitlist-form.is-hidden {
  display: none;
}

/* ===========================================================
   STATS BAR
=========================================================== */
.stats {
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface-2);
}
.stats .wrap {
  padding-block: var(--space-10);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  text-align: center;
}
.stat-num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 650;
  color: var(--color-accent);
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* ===========================================================
   SECTION HEADERS
=========================================================== */
.section-head {
  max-width: 640px;
  margin-bottom: var(--space-12);
}
.section-head h2 {
  font-size: var(--text-xl);
  font-weight: 650;
  margin-top: var(--space-3);
}
.section-head p {
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  font-size: var(--text-base);
}

/* ===========================================================
   LEARN GRID
=========================================================== */
.learn-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.learn-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.learn-card .icon {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}
.learn-card h3 {
  font-size: var(--text-base);
  font-weight: 650;
  font-family: var(--font-body);
  margin-bottom: var(--space-2);
}
.learn-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ===========================================================
   WHO IT'S FOR
=========================================================== */
.who {
  background: var(--color-ink);
  color: var(--color-text-inverse);
}
[data-theme='dark'] .who {
  background: var(--color-surface-2);
}
.who-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}
.who .eyebrow {
  color: var(--color-accent);
}
.who h2 {
  font-size: var(--text-xl);
  font-weight: 650;
  margin-top: var(--space-3);
  color: #fdf6fb;
}
[data-theme='dark'] .who h2 {
  color: var(--color-text);
}
.who-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.who-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}
.who-item .icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 0.2rem;
}
.who-item p {
  color: oklch(from #fdf6fb l c h / 0.82);
  font-size: var(--text-base);
}
[data-theme='dark'] .who-item p {
  color: var(--color-text-muted);
}

/* ===========================================================
   HOSTS
=========================================================== */
.hosts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}
.host-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.host-avatar {
  width: 4.5rem;
  height: 4.5rem;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--color-accent-highlight);
  box-shadow: var(--shadow-sm);
}
.host-card h3 {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 650;
}
.host-card .role {
  font-size: var(--text-xs);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  margin-top: -var(--space-3);
}
.host-card p.bio {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ===========================================================
   FINAL CTA
=========================================================== */
.final-cta {
  background: var(--color-ink);
  color: var(--color-text-inverse);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 6vw, var(--space-16));
  text-align: center;
  margin-inline: var(--space-6);
}
[data-theme='dark'] .final-cta {
  background: var(--color-surface-2);
}
.final-cta h2 {
  font-size: var(--text-xl);
  font-weight: 650;
  color: #fdf6fb;
  margin-bottom: var(--space-4);
}
[data-theme='dark'] .final-cta h2 {
  color: var(--color-text);
}
.final-cta p {
  color: oklch(from #fdf6fb l c h / 0.78);
  max-width: 46ch;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}
[data-theme='dark'] .final-cta p {
  color: var(--color-text-muted);
}
.final-cta .waitlist-form,
.final-cta .form-success {
  margin-inline: auto;
  justify-content: center;
}
.final-cta .form-note {
  color: oklch(from #fdf6fb l c h / 0.55);
}
[data-theme='dark'] .final-cta .form-note {
  color: var(--color-text-faint);
}

/* ===========================================================
   FOOTER
=========================================================== */
.footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-10);
}
.footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
  align-items: center;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer a {
  color: var(--color-text-muted);
  text-decoration: none;
}
.footer a:hover {
  color: var(--color-accent);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* ===========================================================
   RESPONSIVE
=========================================================== */
@media (max-width: 900px) {
  .learn-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .who-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .hosts-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
  }
}
@media (max-width: 600px) {
  .brand-name small {
    display: none;
  }
  .header-inner {
    height: auto;
    padding-block: var(--space-3);
  }
  .learn-grid {
    grid-template-columns: 1fr;
  }
  .hero-copy h1 {
    font-size: clamp(2rem, 8vw, 2.75rem);
  }
  .final-cta {
    margin-inline: var(--space-4);
  }
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}