/* ==========================================================================
   カワサキ企画 — Colors & Type Foundations
   --------------------------------------------------------------------------
   Clean, minimal, Japanese business presentation system.
   Primary: Sequoia Green (#006B3F). White background. No blue. Data-first.
   ========================================================================== */

@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Noto+Serif+JP:wght@400;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap");

:root {
  /* --- Brand: Sequoia Green scale -------------------------------------- */
  --kk-green-900: #002b19;   /* Deep forest, headers on light */
  --kk-green-800: #003d22;   /* Strong on light */
  --kk-green-700: #004d2d;   /* Hover / pressed */
  --kk-green-600: #006B3F;   /* PRIMARY — Sequoia Green */
  --kk-green-500: #1a8055;   /* Default for charts */
  --kk-green-400: #4ea27d;   /* Tints, secondary chart series */
  --kk-green-300: #8cc1a8;   /* Subtle highlights */
  --kk-green-200: #c4dfd1;   /* Backgrounds / table row highlights */
  --kk-green-100: #e6f1eb;   /* Tinted surface */
  --kk-green-050: #f4f9f6;   /* Whisper tint */

  /* --- Neutrals (warm gray, no blue) ----------------------------------- */
  --kk-ink-900: #111111;     /* Body / headlines */
  --kk-ink-800: #1f1f1f;
  --kk-ink-700: #333333;     /* Default text */
  --kk-ink-600: #555555;
  --kk-ink-500: #757575;     /* Secondary text */
  --kk-ink-400: #9a9a9a;     /* Tertiary / hint */
  --kk-ink-300: #c4c4c4;     /* Borders */
  --kk-ink-200: #e0e0e0;     /* Dividers */
  --kk-ink-150: #ececec;
  --kk-ink-100: #f4f4f4;     /* Surface alt */
  --kk-ink-050: #fafafa;     /* Surface alt 2 */
  --kk-white:   #ffffff;     /* Background */

  /* --- Semantic (no blue) --------------------------------------------- */
  --kk-success: #006B3F;     /* Same as brand */
  --kk-warning: #B8860B;     /* Dark goldenrod, warm */
  --kk-danger:  #A8201A;     /* Deep red, restrained */

  /* --- Foreground tokens ---------------------------------------------- */
  --fg-1: var(--kk-ink-900); /* Primary text, headlines */
  --fg-2: var(--kk-ink-700); /* Body text */
  --fg-3: var(--kk-ink-500); /* Secondary text, captions */
  --fg-4: var(--kk-ink-400); /* Tertiary, disabled */
  --fg-accent: var(--kk-green-600);
  --fg-accent-strong: var(--kk-green-700);
  --fg-on-accent: var(--kk-white);

  /* --- Background tokens ---------------------------------------------- */
  --bg-1: var(--kk-white);     /* Page */
  --bg-2: var(--kk-ink-050);   /* Subtle surface */
  --bg-3: var(--kk-ink-100);   /* Table stripes, surfaces */
  --bg-tint: var(--kk-green-050);   /* Brand-tinted surface */
  --bg-tint-strong: var(--kk-green-100);
  --bg-accent: var(--kk-green-600);
  --bg-accent-strong: var(--kk-green-700);

  /* --- Borders --------------------------------------------------------- */
  --border-1: var(--kk-ink-200);    /* Default divider */
  --border-2: var(--kk-ink-300);    /* Stronger border */
  --border-accent: var(--kk-green-600);

  /* --- Type families --------------------------------------------------- */
  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic",
               "Meiryo", system-ui, -apple-system, sans-serif;
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho",
                "MS Mincho", serif;
  --font-mono: "IBM Plex Mono", "SF Mono", Menlo, Consolas, monospace;
  --font-display: var(--font-sans);

  /* --- Type scale (16:9 deck centric, also web-readable) -------------- */
  --fs-display: 56px;   /* Slide hero */
  --fs-h1: 40px;
  --fs-h2: 32px;
  --fs-h3: 24px;
  --fs-h4: 20px;
  --fs-body-lg: 18px;
  --fs-body: 16px;
  --fs-body-sm: 14px;
  --fs-caption: 12px;
  --fs-eyebrow: 11px;

  /* --- Weights (Noto Sans JP) ----------------------------------------- */
  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-bold: 700;

  /* --- Line heights ---------------------------------------------------- */
  --lh-tight: 1.2;
  --lh-snug: 1.35;
  --lh-normal: 1.5;
  --lh-loose: 1.7;

  /* --- Letter spacing (Japanese reads better with slight tracking) ---- */
  --tracking-tight: -0.01em;
  --tracking-normal: 0;
  --tracking-wide: 0.04em;
  --tracking-eyebrow: 0.18em;

  /* --- Spacing scale (4px base) --------------------------------------- */
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* --- Radii (restrained — business, not consumer) -------------------- */
  --radius-0: 0;
  --radius-1: 2px;
  --radius-2: 4px;
  --radius-3: 6px;
  --radius-pill: 999px;

  /* --- Elevation (very subtle — print/business feel) ------------------ */
  --shadow-0: none;
  --shadow-1: 0 1px 2px rgba(17, 17, 17, 0.04),
              0 0 0 1px rgba(17, 17, 17, 0.04);
  --shadow-2: 0 2px 8px rgba(17, 17, 17, 0.06),
              0 0 0 1px rgba(17, 17, 17, 0.04);
  --shadow-3: 0 8px 24px rgba(17, 17, 17, 0.08),
              0 0 0 1px rgba(17, 17, 17, 0.04);

  /* --- Motion (minimal) ----------------------------------------------- */
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --dur-fast: 120ms;
  --dur-base: 200ms;
  --dur-slow: 320ms;

  /* --- Layout ---------------------------------------------------------- */
  --slide-w: 1920px;
  --slide-h: 1080px;
  --content-max: 1200px;
  --rule-thin: 1px;
  --rule-thick: 4px;       /* Sequoia accent rule */
}

/* ==========================================================================
   Base reset + body
   ========================================================================== */
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-1);
  color: var(--fg-2);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ==========================================================================
   Semantic type
   ========================================================================== */
.kk-display, h1.kk-display {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--fg-1);
  margin: 0;
}

h1, .kk-h1 {
  font-family: var(--font-sans);
  font-size: var(--fs-h1);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--fg-1);
  margin: 0 0 var(--space-6);
}

h2, .kk-h2 {
  font-family: var(--font-sans);
  font-size: var(--fs-h2);
  font-weight: var(--fw-bold);
  line-height: var(--lh-snug);
  color: var(--fg-1);
  margin: 0 0 var(--space-5);
}

h3, .kk-h3 {
  font-family: var(--font-sans);
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  line-height: var(--lh-snug);
  color: var(--fg-1);
  margin: 0 0 var(--space-4);
}

h4, .kk-h4 {
  font-family: var(--font-sans);
  font-size: var(--fs-h4);
  font-weight: var(--fw-medium);
  line-height: var(--lh-snug);
  color: var(--fg-1);
  margin: 0 0 var(--space-3);
}

p, .kk-body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-loose);
  color: var(--fg-2);
  margin: 0 0 var(--space-4);
}

.kk-body-lg {
  font-size: var(--fs-body-lg);
  line-height: var(--lh-loose);
}

.kk-body-sm {
  font-size: var(--fs-body-sm);
  line-height: var(--lh-normal);
}

.kk-caption {
  font-size: var(--fs-caption);
  color: var(--fg-3);
  line-height: var(--lh-normal);
}

.kk-eyebrow {
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--fg-accent);
}

.kk-eyebrow-jp {
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-wide);
  color: var(--fg-accent);
}

.kk-mono, code {
  font-family: var(--font-mono);
  font-size: 0.95em;
  color: var(--fg-1);
  background: var(--bg-3);
  padding: 2px 6px;
  border-radius: var(--radius-1);
}

.kk-data-num {
  font-family: var(--font-sans);
  font-weight: var(--fw-bold);
  font-feature-settings: "tnum" 1, "lnum" 1;
  letter-spacing: var(--tracking-tight);
  color: var(--fg-1);
}

/* Accent rule — the recurring brand element */
.kk-rule {
  display: block;
  width: 48px;
  height: var(--rule-thick);
  background: var(--bg-accent);
  border: 0;
  margin: 0 0 var(--space-4);
}
.kk-rule--full {
  width: 100%;
  height: var(--rule-thin);
  background: var(--border-1);
}