/* =========================================================
   ArtificialFlows — Foundation Tokens
   Single source of truth for colors, type, spacing, radius.
   ========================================================= */

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

:root {
  /* ---------- COLORS ---------- */

  /* Brand & accent */
  --color-primary:        #FF5A1F;   /* ArtificialFlows orange — the conversion signature */
  --color-primary-hover:  #E04E18;
  --color-accent:         #1E6BB8;   /* Secondary accent — links / supporting UI */
  --color-accent-warm:    #FFA32B;   /* Warm amber — supporting callouts only */

  /* Surface */
  --color-canvas:         #F3F3F3;   /* Light page background — NOT pure white */
  --color-canvas-soft:    #EBEBEB;   /* Cards / inset regions on light sections */
  --color-navy:           #0F2F57;   /* Deep navy — dark section background */

  /* Text — light sections */
  --color-ink:            #0F2F57;
  --color-ink-soft:       #1A3D6E;
  --color-body:           rgba(15, 47, 87, 0.85);
  --color-body-mid:       rgba(15, 47, 87, 0.65);
  --color-mute:           rgba(15, 47, 87, 0.35);
  --color-hairline:       rgba(15, 47, 87, 0.15);
  --color-hairline-soft:  rgba(15, 47, 87, 0.10);
  --color-input-border:   rgba(15, 47, 87, 0.20);

  /* Text — dark sections */
  --color-on-dark:        #F3F3F3;
  --color-on-dark-body:   rgba(243, 243, 243, 0.65);
  --color-on-dark-mute:   rgba(243, 243, 243, 0.35);
  --color-on-dark-card:   rgba(255, 255, 255, 0.04);
  --color-on-dark-border: rgba(255, 255, 255, 0.08);

  /* ---------- TYPE ---------- */
  --font-sans: "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  /* Weights */
  --fw-regular:   400;
  --fw-medium:    500;
  --fw-semibold:  600;
  --fw-bold:      700;

  /* Display sizes — line-height 1.2, negative tracking */
  --t-display-xl-size: 64px;  --t-display-xl-lh: 1.2;  --t-display-xl-tracking: -0.01em;  --t-display-xl-weight: 700;
  --t-display-lg-size: 48px;  --t-display-lg-lh: 1.2;  --t-display-lg-tracking: -0.01em;  --t-display-lg-weight: 700;
  --t-display-md-size: 36px;  --t-display-md-lh: 1.2;  --t-display-md-tracking: -0.01em;  --t-display-md-weight: 700;
  --t-display-sm-size: 30px;  --t-display-sm-lh: 1.2;  --t-display-sm-tracking: -0.012em; --t-display-sm-weight: 600;
  --t-display-xs-size: 24px;  --t-display-xs-lh: 1.2;  --t-display-xs-tracking: -0.01em;  --t-display-xs-weight: 600;

  /* Body sizes — line-height 1.8, neutral tracking */
  --t-body-lg-size: 18px;     --t-body-lg-lh: 1.78;
  --t-body-md-size: 16px;     --t-body-md-lh: 1.75;
  --t-body-sm-size: 14px;     --t-body-sm-lh: 1.78;

  /* Utility */
  --t-eyebrow-size: 11px;     --t-eyebrow-tracking: 0.2em;   --t-eyebrow-weight: 700;
  --t-button-md-size: 16px;   --t-button-md-weight: 700;
  --t-button-sm-size: 14px;   --t-button-sm-weight: 600;

  /* ---------- SPACING (4px base) ---------- */
  --space-xxs: 2px;
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  12px;
  --space-lg:  16px;
  --space-xl:  24px;
  --space-2xl: 32px;
  --space-3xl: 48px;
  --space-4xl: 64px;
  --space-5xl: 96px;

  /* ---------- RADIUS ---------- */
  --radius-none: 0;
  --radius-sm:   6px;     /* form inputs, inline tags */
  --radius-md:   12px;    /* canonical button + card radius */
  --radius-pill: 9999px;

  /* ---------- LAYOUT ---------- */
  --container-max: 1400px;
  --section-padding-y: var(--space-5xl);
  --section-padding-x: var(--space-xl);
}

/* =========================================================
   Base resets — opinionated, narrowed scope
   ========================================================= */
.af-root,
.af-root * {
  box-sizing: border-box;
}

.af-root {
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* =========================================================
   Semantic type classes
   ========================================================= */
.af-display-xl {
  font-family: var(--font-sans);
  font-size: var(--t-display-xl-size);
  line-height: var(--t-display-xl-lh);
  letter-spacing: var(--t-display-xl-tracking);
  font-weight: var(--t-display-xl-weight);
}
.af-display-lg {
  font-family: var(--font-sans);
  font-size: var(--t-display-lg-size);
  line-height: var(--t-display-lg-lh);
  letter-spacing: var(--t-display-lg-tracking);
  font-weight: var(--t-display-lg-weight);
}
.af-display-md {
  font-family: var(--font-sans);
  font-size: var(--t-display-md-size);
  line-height: var(--t-display-md-lh);
  letter-spacing: var(--t-display-md-tracking);
  font-weight: var(--t-display-md-weight);
}
.af-display-sm {
  font-family: var(--font-sans);
  font-size: var(--t-display-sm-size);
  line-height: var(--t-display-sm-lh);
  letter-spacing: var(--t-display-sm-tracking);
  font-weight: var(--t-display-sm-weight);
}
.af-display-xs {
  font-family: var(--font-sans);
  font-size: var(--t-display-xs-size);
  line-height: var(--t-display-xs-lh);
  letter-spacing: var(--t-display-xs-tracking);
  font-weight: var(--t-display-xs-weight);
}
.af-body-lg {
  font-family: var(--font-sans);
  font-size: var(--t-body-lg-size);
  line-height: var(--t-body-lg-lh);
  font-weight: var(--fw-medium);
}
.af-body-md {
  font-family: var(--font-sans);
  font-size: var(--t-body-md-size);
  line-height: var(--t-body-md-lh);
  font-weight: var(--fw-medium);
}
.af-body-sm {
  font-family: var(--font-sans);
  font-size: var(--t-body-sm-size);
  line-height: var(--t-body-sm-lh);
  font-weight: var(--fw-medium);
}
.af-eyebrow {
  font-family: var(--font-sans);
  font-size: var(--t-eyebrow-size);
  line-height: 1;
  letter-spacing: var(--t-eyebrow-tracking);
  font-weight: var(--t-eyebrow-weight);
  text-transform: uppercase;
  color: var(--color-primary);
}

/* =========================================================
   Button primitives
   ========================================================= */
.af-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-sans);
  font-size: var(--t-button-md-size);
  font-weight: var(--t-button-md-weight);
  line-height: 1;
  padding: 14px 36px;
  border-radius: var(--radius-md);
  border: 0;
  cursor: pointer;
  text-decoration: none;
  transition: transform 160ms ease, background-color 160ms ease, color 160ms ease, border-color 160ms ease;
  min-height: 48px;
  white-space: nowrap;
}
.af-btn:hover { transform: translateY(-2px); }
.af-btn:active { transform: translateY(0); }

.af-btn--primary {
  background: var(--color-primary);
  color: #FFFFFF;
}
.af-btn--primary:hover { background: var(--color-primary-hover); }

.af-btn--secondary {
  background: var(--color-ink);
  color: var(--color-canvas);
}
.af-btn--secondary:hover { background: #1A3D6E; }

.af-btn--outline {
  background: transparent;
  color: var(--color-ink);
  border: 1.5px solid var(--color-ink);
}
.af-btn--outline:hover { background: var(--color-ink); color: var(--color-canvas); }

.af-btn--sm {
  font-size: var(--t-button-sm-size);
  font-weight: var(--t-button-sm-weight);
  padding: 10px 20px;
  min-height: 40px;
}

/* =========================================================
   Card primitives
   ========================================================= */
.af-card-light {
  background: var(--color-canvas-soft);
  color: var(--color-ink);
  padding: var(--space-xl);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-hairline-soft);
}
.af-card-dark {
  background: var(--color-on-dark-card);
  color: var(--color-on-dark);
  padding: var(--space-xl);
  border-radius: 16px;
  border: 1px solid var(--color-on-dark-border);
  transition: background-color 200ms ease, border-color 200ms ease;
}
.af-card-dark:hover {
  background: rgba(255, 90, 31, 0.05);
  border-color: rgba(255, 90, 31, 0.3);
}

/* =========================================================
   Signature primitives
   ========================================================= */
.af-divider-orange {
  width: 32px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  display: block;
}
.af-bullet-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
  margin-top: 11px;
}
.af-number-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 15px;
}
.af-input {
  display: block;
  width: 100%;
  background: var(--color-canvas);
  color: var(--color-ink);
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: var(--t-body-md-size);
  font-weight: var(--fw-medium);
  line-height: 1.4;
  outline: none;
  transition: border-color 160ms ease;
}
.af-input:focus { border-color: var(--color-primary); }
.af-input::placeholder { color: var(--color-mute); }

/* =========================================================
   Section bands
   ========================================================= */
.af-section-light {
  background: var(--color-canvas);
  color: var(--color-ink);
  padding: var(--section-padding-y) var(--section-padding-x);
}
.af-section-dark {
  background: var(--color-navy);
  color: var(--color-on-dark);
  padding: var(--section-padding-y) var(--section-padding-x);
}
.af-container {
  max-width: var(--container-max);
  margin: 0 auto;
}