/* =========================================================================
   Twobirds — Foundations
   Editorial brand in the British tradition. Warm paper canvas, charcoal ink,
   olive heritage marker, single royal-blue accent applied with restraint.
   ========================================================================= */

@import url("https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Lato:ital,wght@0,300;0,400;0,500;0,700;0,900;1,400&family=Source+Sans+3:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap");

:root {
  /* ---------- Brand / Accent ---------- */
  --charcoal:        #383838;
  --paper:           #FAF8F2;

  --royal:           #1E3A6F;
  --royal-deep:      #14264A;
  --royal-soft:      #3D5A8A;

  --olive:           #969265;
  --olive-deep:      #6F6C49;
  --olive-light:     #C4BFA0;

  /* ---------- Surface ---------- */
  --canvas:          #FAF8F2;
  --canvas-warm:     #F5F2E8;
  --bone:            #F5F2E8;

  --hairline:        #E8E5DA;
  --hairline-soft:   #EFECE2;
  --surface-cool:    #F0EEE5;

  --scrim:           #1F1F1D;
  --footer:          #15140F;

  /* ---------- Text ---------- */
  --ink:             #1A1A1A;
  --ink-soft:        #2D2D2D;
  --graphite:        #5C5C5C;
  --slate:           #707070;
  --mute:            #9A9A9A;
  --stone:           #D4D2C5;
  --ash:             #B8B8B8;

  /* ---------- Role aliases ---------- */
  --color-primary:   var(--charcoal);
  --color-secondary: var(--olive);
  --color-tertiary:  var(--royal);
  --color-neutral:   var(--paper);

  --fg:              var(--ink);
  --fg-soft:         var(--ink-soft);
  --fg-body:         var(--graphite);
  --fg-meta:         var(--slate);
  --bg:              var(--canvas);
  --bg-warm:         var(--canvas-warm);
  --rule:            var(--hairline);

  /* ---------- Type families ---------- */
  --font-serif: "Playfair Display", "Cormorant Garamond", "Lora", "Times New Roman", Georgia, serif;
  --font-sans:  "Lato", "Source Sans 3", "Inter", system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;

  /* ---------- Spacing scale (8-px base, 4-px micro) ---------- */
  --space-xxs: 4px;
  --space-xs:  8px;
  --space-sm:  12px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-xxl: 48px;
  --space-section:    76px;
  --space-section-lg: 104px;

  /* ---------- Radius scale ---------- */
  --r-none: 0px;
  --r-xs:   2px;
  --r-sm:   4px;
  --r-md:   8px;
  --r-lg:   12px;
  --r-full: 9999px;

  /* ---------- Layout ---------- */
  --container-max: 1240px;
  --gutter:        var(--space-xxl);
  --rule-w:        1px;
  --olive-rule-w:  4px;

  /* ---------- Motion ---------- */
  --ease-standard: cubic-bezier(.22,.61,.36,1);
  --dur-fast:   150ms;
  --dur-base:   200ms;
  --dur-slow:   250ms;
  --dur-slower: 300ms;
}

/* =========================================================================
   Base type roles — drop-in semantic helpers
   ========================================================================= */

html, body {
  background: var(--canvas);
  color: var(--fg-body);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
/* The full-bleed video covers are sized at 100vw inside clipped frames, but a
   sub-pixel of horizontal overflow still surfaced a stray scrollbar/sliver on
   wider screens. overflow-x: clip removes it without creating a scroll
   container (so position: sticky and the page-flight transition are unaffected). */
body { overflow-x: clip; }

/* --- Display levels (Playfair Display) --- */
.t-display-xl, .t-display, .t-display-sm,
.t-heading-md, .t-heading-sm, .t-quote, .t-wordmark,
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--ink);
  font-feature-settings: "kern", "liga", "onum";
}

.t-display-xl {
  font-size: 72px; font-weight: 400; line-height: 1.0;
  letter-spacing: -0.02em;
}
.t-display, h1 {
  font-size: 56px; font-weight: 400; line-height: 1.05;
  letter-spacing: -0.018em;
}
.t-display-sm, h2 {
  font-size: 44px; font-weight: 400; line-height: 1.1;
  letter-spacing: -0.015em;
}
.t-heading-md, h3 {
  font-size: 32px; font-weight: 500; line-height: 1.15;
  letter-spacing: -0.012em;
}
.t-heading-sm, h4 {
  font-size: 26px; font-weight: 500; line-height: 1.2;
  letter-spacing: -0.01em;
}
.t-quote {
  font-size: 40px; font-weight: 400; line-height: 1.2;
  letter-spacing: -0.015em;
  font-style: italic;
}

/* --- Body & supporting (Source Sans 3) --- */
.t-subtitle {
  font-family: var(--font-sans);
  font-size: 19px; font-weight: 300; line-height: 1.55;
  color: var(--graphite);
}
.t-body, p {
  font-family: var(--font-sans);
  font-size: 16px; font-weight: 400; line-height: 1.65;
  color: var(--graphite);
}
.t-body-strong { font-weight: 600; color: var(--ink-soft); }
.t-body-tight  { font-size: 15px; line-height: 1.45; }

.t-link-sm, a.t-link-sm {
  font-family: var(--font-sans);
  font-size: 14px; font-weight: 500; line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--charcoal);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color var(--dur-base) var(--ease-standard);
}
.t-link-sm:hover { color: var(--royal); }

.t-eyebrow {
  font-family: var(--font-sans);
  font-size: 12px; font-weight: 600; line-height: 1.45;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--royal);
}
.t-meta {
  font-family: var(--font-sans);
  font-size: 13px; font-weight: 400; line-height: 1.4;
  color: var(--slate);
}
.t-micro-caps {
  font-family: var(--font-sans);
  font-size: 11px; font-weight: 600; line-height: 1.4;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--slate);
}
.t-button {
  font-family: var(--font-sans);
  font-size: 14px; font-weight: 600; line-height: 1.0;
  letter-spacing: 0.02em;
}
.t-wordmark {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 26px;
  letter-spacing: 0.18em;
  line-height: 1.0;
}

/* --- Italic emphasis (the system's only typographic flourish) --- */
.t-italic {
  font-style: italic;
  color: var(--olive-deep);
}
.on-dark .t-italic, .t-italic.on-dark {
  color: var(--olive-light);
}

/* =========================================================================
   Eyebrow-hairline lockup (signature section opener)
   32-px leading hairline · 12-px space · uppercase eyebrow text
   ========================================================================= */
.eyebrow-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--royal);
  font-family: var(--font-sans);
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.eyebrow-lockup::before {
  content: "";
  width: 32px; height: 1px;
  background: currentColor;
  flex: 0 0 32px;
}
.on-dark .eyebrow-lockup,
.eyebrow-lockup.on-dark {
  color: var(--olive-light);
}
.eyebrow-lockup.on-dark::before { background: var(--olive-light); }

/* =========================================================================
   Olive vertical rule — brand-presence cue for dark surfaces
   ========================================================================= */
.olive-rule {
  position: relative;
}
.olive-rule::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: var(--olive-rule-w);
  background: var(--olive);
}

/* =========================================================================
   Buttons — single height (42px), pill (full), 14/600 button text
   ========================================================================= */
.btn {
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 9px 24px;
  border-radius: var(--r-full);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 14px; font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--dur-slow) var(--ease-standard),
              color var(--dur-slow) var(--ease-standard),
              transform var(--dur-base) var(--ease-standard),
              border-color var(--dur-slow) var(--ease-standard);
}
.btn:hover { transform: translateY(-1px); }

.btn-primary  { background: var(--charcoal); color: var(--paper); }
.btn-primary:hover  { background: var(--royal-deep); }

.btn-royal    { background: var(--royal); color: var(--paper); }
.btn-royal:hover    { background: var(--royal-deep); }

.btn-on-dark  { background: var(--paper); color: var(--charcoal); }
.btn-on-dark:hover  { background: var(--olive-light); color: var(--charcoal); }

.btn-ghost    { background: var(--canvas); color: var(--charcoal); border-color: var(--charcoal); }
.btn-ghost:hover    { background: var(--charcoal); color: var(--paper); }

.btn-ghost-on-dark {
  background: transparent; color: var(--paper);
  border-color: var(--olive-light);
}
.btn-ghost-on-dark:hover { background: rgba(196,191,160,.12); color: var(--olive-light); }

.btn-text {
  height: auto; padding: 0;
  background: transparent; color: var(--charcoal);
  border-bottom: 1px solid currentColor;
  border-radius: 0;
}
.btn-text:hover { color: var(--royal); transform: none; }

/* =========================================================================
   Form fields — single bottom-rule, no full-border box
   ========================================================================= */
.field {
  display: flex; flex-direction: column; gap: 8px;
}
.field-label {
  font-family: var(--font-sans);
  font-size: 16px; font-weight: 600; line-height: 1.65;
  color: var(--ink-soft);
}
.field-input,
.field-textarea {
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px; line-height: 1.65;
  padding: 12px 0;
  border: none;
  border-bottom: 1px solid var(--hairline);
  border-radius: 0;
  outline: none;
  transition: border-color var(--dur-base) var(--ease-standard),
              border-width var(--dur-base) var(--ease-standard);
}
.field-input::placeholder,
.field-textarea::placeholder { color: var(--stone); }
.field-input:focus,
.field-textarea:focus {
  border-bottom: 2px solid var(--charcoal);
  padding-bottom: 11px;
}
.field-help {
  font-family: var(--font-sans);
  font-size: 13px; line-height: 1.4;
  color: var(--slate);
}

/* =========================================================================
   Surfaces & misc utilities
   ========================================================================= */
.surface-canvas      { background: var(--canvas); color: var(--ink); }
.surface-canvas-warm { background: var(--canvas-warm); color: var(--ink); }
.surface-scrim       { background: var(--scrim); color: var(--paper); }
.surface-royal-deep  { background: var(--royal-deep); color: var(--paper); }
.surface-footer      { background: var(--footer); color: var(--paper); }

.hairline-top    { border-top: 1px solid var(--hairline); }
.hairline-bottom { border-bottom: 1px solid var(--hairline); }
.hairline-y      { border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}