/* ============================================================
   Crescendo Lab — Colors & Type
   Source of truth: /CL Website System Test.fig (Style frame)
   ============================================================ */

/* ---- Webfonts — loaded from CDN, matching production (www.cresclab.com) ----
   @import rules must precede all other rules, so the font loads stay at the
   top of this file (the same file every page links).
     - TT Commons Pro        -> Adobe Fonts (Typekit) kit; family "tt-commons-pro"
     - Noto Sans TC/JP/Thai   -> Google Fonts (served as on-demand unicode-range subsets)
     - Inter & Roboto         -> Google Fonts (legacy Latin display & UI numerals)
   No font binaries are bundled. Pages need network access at view time;
   offline, the script-aware fallback stacks defined below take over. */
@import url("https://use.typekit.net/fga5kbq.css");
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&family=Noto+Sans+TC:wght@400;500;700&family=Noto+Sans+Thai:wght@400;500;700&family=Inter:wght@400;500;600;700;800&family=Roboto:wght@400;500;700&display=swap");

:root {
  /* ============================================================
     COLOR — Crescendo brand palette (extracted from Figma)
     ============================================================ */

  /* Brand blues — the core "Crescendo Blue" identity */
  --cl-blue:            rgb(80, 144, 255);    /* Primary brand blue. 959× usage. */
  --cl-blue-deep:       rgb(63, 123, 255);    /* Gradient-start. Darker brand blue. */
  --cl-blue-light:      rgb(128, 187, 255);   /* Gradient-end. Lighter brand blue. */
  --cl-blue-pressed:    rgb(69, 134, 240);    /* Hover/active. */
  --cl-blue-deepest:    rgb(31, 73, 163);     /* On-brand-dark text. */
  --cl-blue-10:         rgba(80, 144, 255, 0.1);  /* Tint chips, icon tile bg. */
  --cl-blue-bg:         rgb(226, 239, 255);   /* Soft brand surface. 6438× — top fill. */
  --cl-blue-bg-2:       rgb(238, 244, 255);   /* Even softer brand surface. */

  /* Neutral foregrounds */
  --cl-fg-1:            rgb(34, 42, 54);      /* Primary text — headings & body. 658× */
  --cl-fg-2:            rgb(77, 89, 119);     /* Secondary text — descriptions. */
  --cl-fg-3:            rgb(107, 114, 128);   /* Tertiary text — meta. */
  --cl-fg-4:            rgb(140, 156, 171);   /* Quaternary — placeholder. */
  --cl-fg-muted:        rgb(147, 155, 160);   /* "Icon Gery" — UI iconography. */

  /* Neutral surfaces */
  --cl-bg:              rgb(255, 255, 255);
  --cl-bg-tint:         rgb(248, 249, 252);   /* "Background Gray" — page sections. #F8F9FC */
  --cl-bg-card:         rgb(241, 242, 249);   /* "Card Gray" — card surface tint. #F1F2F9 */
  --cl-bg-card-alt:     rgb(228, 228, 228);   /* Placeholder card surface. */
  --cl-border:          rgb(228, 228, 228);
  --cl-border-soft:     rgb(238, 238, 238);   /* Secondary button border. */
  --cl-border-strong:   rgb(215, 222, 228);

  /* Accents */
  --cl-ai-purple:       rgb(128, 32, 248);    /* "AI Purple" — AI-features only. */
  --cl-ai-purple-soft:  rgb(164, 156, 255);   /* AI gradient endpoint. */
  --cl-success:         rgb(6, 199, 85);

  /* Gradients */
  --cl-gradient-blue:   linear-gradient(180deg, rgb(63,123,255) 0%, rgb(80,144,255) 46%, rgb(128,187,255) 100%);
  --cl-gradient-blue-h: linear-gradient(90deg, rgb(63,123,255) 0%, rgb(80,144,255) 46%, rgb(128,187,255) 100%);
  --cl-gradient-grey:   linear-gradient(180deg, rgb(193,193,193) 17%, rgb(231,231,231) 100%);

  /* Shadows — soft, blue-tinted, inset highlight on brand buttons */
  --cl-shadow-card:     0px 0px 15px 0px rgba(0, 64, 193, 0.05);
  --cl-shadow-card-blue:0px 0px 15px 0px rgba(80, 144, 255, 0.10);
  --cl-shadow-elev:     0px 8px 32px 0px rgba(34, 59, 83, 0.12);
  --cl-shadow-soft:     0px 4px 16px 0px rgba(34, 59, 83, 0.08);
  --cl-inset-highlight: inset 0px -8px 15px 0px rgba(255, 255, 255, 0.25);

  /* ============================================================
     TYPE — Crescendo type scale
     Primary: Noto Sans TC (Traditional Chinese + Latin)
     Display latin/numerals: Inter (Bold/ExtraBold)
     Mono/UI numerals: Roboto
     ============================================================ */
  /* Per-script rules:
     • English  → TT Commons
     • Chinese  → Noto Sans TC
     • Japanese → Noto Sans JP
     • Thai     → Noto Sans Thai
     The fallback chain below puts TT Commons first (Latin), then each Noto
     face is picked up automatically by the browser for its respective script. */
  --cl-font-sans:    "tt-commons-pro", "Noto Sans TC", "Noto Sans JP", "Noto Sans Thai", "PingFang TC", "Helvetica Neue", system-ui, sans-serif;
  --cl-font-display: "tt-commons-pro", "Noto Sans TC", "Noto Sans JP", "Noto Sans Thai", system-ui, sans-serif;
  --cl-font-ui:      "tt-commons-pro", "Noto Sans TC", "Noto Sans JP", "Noto Sans Thai", system-ui, sans-serif;
  /* Per-script explicit stacks, when you want to force a single language */
  --cl-font-en:      "tt-commons-pro", system-ui, sans-serif;
  --cl-font-zh:      "Noto Sans TC", "PingFang TC", system-ui, sans-serif;
  --cl-font-ja:      "Noto Sans JP", "Hiragino Sans", system-ui, sans-serif;
  --cl-font-th:      "Noto Sans Thai", system-ui, sans-serif;

  /* Type sizes (px) — keys mirror Figma names */
  --cl-text-xs:    12.8px;   /* 0.8em  */
  --cl-text-s:     14.4px;   /* 0.9em  */
  --cl-text-m:     16px;     /* 1em    */
  --cl-text-l:     17.6px;   /* 1.1em  */
  --cl-text-xl:    24px;     /* 1.5em  */
  --cl-text-xxl:   32px;     /* 2em    */
  --cl-text-metric:64px;     /* 4em    */
  --cl-text-metric-xl: 80px; /* 5em    */

  /* Heading sizes */
  --cl-heading-m:   24px;    /* H3 card title */
  --cl-heading-l:   32px;    /* H3 product title */
  --cl-heading-xl:  40px;    /* H2 section title */
  --cl-heading-xxl: 56px;    /* H1 hero */

  /* Paragraph sizes */
  --cl-para-m:   16px;
  --cl-para-l:   17.6px;
  --cl-para-xl:  20px;
  --cl-para-xxl: 80px;       /* Display paragraph (rare) */

  /* Line-heights */
  --cl-lh-tight: 1.2;
  --cl-lh-snug:  1.3;
  --cl-lh-normal:1.5;
  --cl-lh-body:  1.6;
  --cl-lh-loose: 1.8;

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

  /* ============================================================
     SPACING — Gap & padding tokens (Figma "Size" frame)
     ============================================================ */
  --cl-gap-xxs:  8px;
  --cl-gap-xs:   12px;
  --cl-gap-s:    16px;
  --cl-gap-m:    24px;
  --cl-gap-l:    32px;
  --cl-gap-xl:   40px;
  --cl-gap-xl-plus: 48px;
  --cl-gap-xxl:  64px;
  --cl-gap-xxxl: 80px;

  --cl-card-pad-l:  40px;
  --cl-card-pad-xl: 64px;

  --cl-section-spacing: 128px;     /* between page sections */
  --cl-global-padding:  96px;      /* page side padding */
  --cl-hero-padding:    24px;      /* mobile hero side padding */

  /* ============================================================
     RADII
     ============================================================ */
  --cl-radius-xs:   8px;
  --cl-radius-s:    12px;
  --cl-radius-m:    20px;
  --cl-radius-l:    32px;
  --cl-radius-full: 100em;
  --cl-radius-pill: 200px;         /* button radius */

  /* ============================================================
     LAYOUT
     ============================================================ */
  --cl-max-width:   1280px;
  --cl-content-w:   1200px;
}

/* ============================================================
   SEMANTIC TYPE CLASSES
   Use these directly: <h1 class="cl-h1">…</h1>
   ============================================================ */

.cl-h1, .cl-heading-xxl {
  font-family: var(--cl-font-sans);
  font-weight: var(--cl-w-bold);
  font-size: var(--cl-heading-xxl);
  line-height: var(--cl-lh-tight);
  color: var(--cl-fg-1);
  letter-spacing: -0.01em;
}
.cl-h2, .cl-heading-xl {
  font-family: var(--cl-font-sans);
  font-weight: var(--cl-w-bold);
  font-size: var(--cl-heading-xl);
  line-height: var(--cl-lh-snug);
  color: var(--cl-fg-1);
}
.cl-h3, .cl-heading-l {
  font-family: var(--cl-font-sans);
  font-weight: var(--cl-w-bold);
  font-size: var(--cl-heading-l);
  line-height: var(--cl-lh-tight);
  color: var(--cl-fg-1);
}
.cl-h4, .cl-heading-m {
  font-family: var(--cl-font-sans);
  font-weight: var(--cl-w-bold);
  font-size: var(--cl-heading-m);
  line-height: var(--cl-lh-snug);
  color: var(--cl-fg-1);
}

.cl-p-xl {
  font-family: var(--cl-font-sans);
  font-size: var(--cl-para-xl);
  line-height: var(--cl-lh-loose);
  color: var(--cl-fg-2);
}
.cl-p-l {
  font-family: var(--cl-font-sans);
  font-size: var(--cl-para-l);
  line-height: var(--cl-lh-body);
  color: var(--cl-fg-2);
}
.cl-p, .cl-p-m {
  font-family: var(--cl-font-sans);
  font-size: var(--cl-para-m);
  line-height: var(--cl-lh-body);
  color: var(--cl-fg-2);
}
.cl-p-s {
  font-family: var(--cl-font-sans);
  font-size: var(--cl-text-s);
  line-height: var(--cl-lh-body);
  color: var(--cl-fg-3);
}
.cl-p-xs {
  font-family: var(--cl-font-sans);
  font-size: var(--cl-text-xs);
  line-height: var(--cl-lh-normal);
  color: var(--cl-fg-3);
}

.cl-metric {
  font-family: var(--cl-font-display);
  font-weight: var(--cl-w-bold);
  font-size: var(--cl-text-metric);
  line-height: 1;
  color: var(--cl-blue);
}
.cl-metric-xl {
  font-family: var(--cl-font-display);
  font-weight: var(--cl-w-bold);
  font-size: var(--cl-text-metric-xl);
  line-height: 1;
  color: var(--cl-blue);
}

.cl-eyebrow {
  font-family: var(--cl-font-sans);
  font-weight: var(--cl-w-medium);
  font-size: var(--cl-text-s);
  line-height: 1;
  color: var(--cl-blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ---- Base reset for design-system pages ---- */
.cl-root {
  font-family: var(--cl-font-sans);
  color: var(--cl-fg-1);
  background: var(--cl-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.cl-root * { box-sizing: border-box; }