/* PUTDUK Design System 2026 — PHASE 6
 * Canonical tokens and reusable primitives.
 * Existing production classes remain backward-compatible; new UI should use --pd-* tokens.
 */
:root {
  /* Color */
  --pd-color-bg: #f5f8f7;
  --pd-color-surface: #ffffff;
  --pd-color-surface-soft: #eff5f2;
  --pd-color-text: #13251f;
  --pd-color-text-muted: #65756f;
  --pd-color-primary: #0d9f76;
  --pd-color-primary-strong: #087857;
  --pd-color-accent: #c18a2d;
  --pd-color-danger: #c84b58;
  --pd-color-warning: #b7791f;
  --pd-color-success: #0d9f76;
  --pd-color-info: #2563eb;
  --pd-color-border: rgba(19, 54, 45, .12);
  --pd-color-focus: color-mix(in srgb, var(--pd-color-primary) 46%, transparent);

  /* Typography */
  --pd-font-sans: Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --pd-font-size-xs: 12px;
  --pd-font-size-sm: 14px;
  --pd-font-size-md: 15px;
  --pd-font-size-lg: 17px;
  --pd-font-size-xl: 21px;
  --pd-font-size-2xl: 28px;
  --pd-font-size-3xl: clamp(32px, 4vw, 44px);
  --pd-line-tight: 1.2;
  --pd-line-normal: 1.5;
  --pd-line-readable: 1.68;
  --pd-weight-regular: 400;
  --pd-weight-medium: 550;
  --pd-weight-semibold: 700;
  --pd-weight-bold: 800;
  --pd-weight-black: 900;

  /* Spacing — 4px base */
  --pd-space-1: 4px;
  --pd-space-2: 8px;
  --pd-space-3: 12px;
  --pd-space-4: 16px;
  --pd-space-5: 20px;
  --pd-space-6: 24px;
  --pd-space-7: 28px;
  --pd-space-8: 32px;
  --pd-space-10: 40px;
  --pd-space-12: 48px;
  --pd-space-16: 64px;

  /* Shape */
  --pd-radius-sm: 8px;
  --pd-radius-md: 12px;
  --pd-radius-lg: 16px;
  --pd-radius-xl: 20px;
  --pd-radius-2xl: 26px;
  --pd-radius-pill: 999px;

  /* Elevation */
  --pd-shadow-xs: 0 4px 14px rgba(13, 63, 47, .055);
  --pd-shadow-sm: 0 10px 28px rgba(13, 63, 47, .075);
  --pd-shadow-md: 0 16px 38px rgba(13, 63, 47, .11);
  --pd-shadow-lg: 0 24px 64px rgba(13, 63, 47, .15);

  /* Layout / layers */
  --pd-content-max: 1280px;
  --pd-touch-target: 44px;
  --pd-z-base: 1;
  --pd-z-sticky: 20;
  --pd-z-dropdown: 100;
  --pd-z-overlay: 500;
  --pd-z-modal: 700;
  --pd-z-toast: 900;

  /* Motion */
  --pd-motion-fast: 120ms;
  --pd-motion-normal: 180ms;
  --pd-motion-slow: 280ms;
  --pd-ease-standard: cubic-bezier(.2, .65, .3, 1);
  --pd-ease-emphasized: cubic-bezier(.16, 1, .3, 1);

  /* Breakpoints */
  --pd-bp-sm: 430px;
  --pd-bp-md: 760px;
  --pd-bp-lg: 980px;
  --pd-bp-xl: 1280px;
}

[data-theme="dark"] {
  --pd-color-bg: #07100e;
  --pd-color-surface: #10231e;
  --pd-color-surface-soft: #0d1b18;
  --pd-color-text: #edf8f3;
  --pd-color-text-muted: #9eb5ab;
  --pd-color-primary: #23d49b;
  --pd-color-primary-strong: #42edb6;
  --pd-color-accent: #e7b851;
  --pd-color-danger: #ff8792;
  --pd-color-border: rgba(202, 240, 225, .12);
}

/* Canonical primitives for all new surfaces. */
.pd-button,
.pd-input,
.pd-select,
.pd-textarea {
  font: inherit;
  font-family: var(--pd-font-sans);
}

.pd-button {
  min-height: var(--pd-touch-target);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--pd-space-2);
  padding: 0 var(--pd-space-4);
  border: 1px solid transparent;
  border-radius: var(--pd-radius-md);
  font-size: var(--pd-font-size-sm);
  font-weight: var(--pd-weight-bold);
  line-height: var(--pd-line-normal);
  cursor: pointer;
  transition:
    transform var(--pd-motion-normal) var(--pd-ease-standard),
    border-color var(--pd-motion-normal) var(--pd-ease-standard),
    background var(--pd-motion-normal) var(--pd-ease-standard),
    box-shadow var(--pd-motion-normal) var(--pd-ease-standard),
    opacity var(--pd-motion-fast) linear;
}

.pd-button--primary {
  color: #fff;
  background: var(--pd-color-primary);
  box-shadow: var(--pd-shadow-sm);
}

.pd-button--secondary {
  color: var(--pd-color-text);
  background: var(--pd-color-surface);
  border-color: var(--pd-color-border);
}

.pd-button--danger {
  color: #fff;
  background: var(--pd-color-danger);
}

.pd-button:hover:not(:disabled) { transform: translateY(-1px); }
.pd-button:disabled { opacity: .45; cursor: not-allowed; }
.pd-button:focus-visible,
.pd-input:focus-visible,
.pd-select:focus-visible,
.pd-textarea:focus-visible {
  outline: 3px solid var(--pd-color-focus);
  outline-offset: 2px;
}

.pd-input,
.pd-select,
.pd-textarea {
  width: 100%;
  min-height: var(--pd-touch-target);
  padding: 0 var(--pd-space-3);
  color: var(--pd-color-text);
  background: var(--pd-color-surface);
  border: 1px solid var(--pd-color-border);
  border-radius: var(--pd-radius-md);
}

.pd-textarea {
  min-height: 120px;
  padding-block: var(--pd-space-3);
  resize: vertical;
  line-height: var(--pd-line-readable);
}

.pd-card {
  min-width: 0;
  padding: var(--pd-space-6);
  color: var(--pd-color-text);
  background: var(--pd-color-surface);
  border: 1px solid var(--pd-color-border);
  border-radius: var(--pd-radius-xl);
  box-shadow: var(--pd-shadow-sm);
}

.pd-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 var(--pd-space-3);
  border-radius: var(--pd-radius-pill);
  font-size: var(--pd-font-size-xs);
  font-weight: var(--pd-weight-bold);
  line-height: 1;
}

.pd-progress {
  width: 100%;
  height: 8px;
  overflow: hidden;
  border-radius: var(--pd-radius-pill);
  background: var(--pd-color-surface-soft);
}

.pd-progress > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--pd-color-primary);
  transition: width var(--pd-motion-slow) var(--pd-ease-emphasized);
}

@media (prefers-reduced-motion: reduce) {
  .pd-button,
  .pd-progress > span {
    transition: none;
  }
  .pd-button:hover:not(:disabled) { transform: none; }
}

@media (max-width: 760px) {
  .pd-card { padding: var(--pd-space-4); }
}

@media (max-width: 430px) {
  .pd-button { width: 100%; }
}