/**
 * SEA VIN Brand Foundation — single token source of truth
 * One Brand Foundation + Multiple Context Shells
 *
 * Apps MUST load this file before shell-specific CSS.
 * Legacy namespaces (--sg-*, --sv-*, --sea-*, --proto-*) alias into --seavin-*.
 * Do not invent a second parallel palette in product CSS.
 */

/* ========== FULL-BLEED LAYOUT CONTRACT ==========
 * BACKGROUND = FULL BLEED · CONTENT = CONSTRAINED
 * Extracted from Navigation reference (body.nav-v2 { margin:0 }).
 * Do NOT use width:100vw (scrollbar-induced horizontal overflow).
 * Theme palettes stay in seavin-adaptive-themes.css — unchanged here.
 */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  margin: 0;
  padding: 0;
  width: 100%;
  min-width: 0;
  min-height: 100%;
  background-color: var(--seavin-bg, #f3f9fa);
}

body {
  margin: 0;
  padding: 0;
  width: 100%;
  min-width: 0;
  min-height: 100%;
  overflow-x: clip;
}

.seavin-code-page,
.seavin-page-root {
  display: block;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

:root {
  /* Brand */
  --seavin-brand-deep: #0b4452;
  --seavin-brand-primary: #0c7180;
  --seavin-brand-accent: #119b9a;
  --seavin-brand-blue: #2d71ae;
  --seavin-brand-violet: #5b6cc8;

  /* Surfaces (light) */
  --seavin-bg: #f3f9fa;
  --seavin-bg-secondary: #eef8f9;
  --seavin-surface: rgba(255, 255, 255, 0.86);
  --seavin-surface-strong: #ffffff;
  --seavin-surface-muted: #e8f6f6;

  /* Text */
  --seavin-text-primary: #102b33;
  --seavin-text-secondary: #6f858c;
  --seavin-text-muted: #8a9da3;
  --seavin-text-on-brand: #ffffff;

  /* Borders / focus */
  --seavin-border: #dcebed;
  --seavin-border-strong: rgba(12, 113, 128, 0.28);
  --seavin-focus-ring: 0 0 0 3px rgba(17, 155, 154, 0.22);

  /* Semantic */
  --seavin-success: #0c7180;
  --seavin-success-bg: #ecf8f6;
  --seavin-warning: #c86a2a;
  --seavin-warning-bg: #fff1e7;
  --seavin-danger: #b42318;
  --seavin-danger-bg: #fef3f2;
  --seavin-info: #2d71ae;
  --seavin-info-bg: #eef6fb;

  /* Radius */
  --seavin-radius-sm: 10px;
  --seavin-radius-md: 14px;
  --seavin-radius-lg: 20px;
  --seavin-radius-xl: 28px;
  --seavin-radius-pill: 999px;

  /* Shadow */
  --seavin-shadow-sm: 0 8px 20px rgba(21, 77, 86, 0.06);
  --seavin-shadow-md: 0 18px 48px rgba(21, 77, 86, 0.09);
  --seavin-shadow-lg: 0 24px 56px rgba(13, 97, 100, 0.14);
  --seavin-content-max: 1180px;

  /* Spacing */
  --seavin-space-1: 4px;
  --seavin-space-2: 8px;
  --seavin-space-3: 12px;
  --seavin-space-4: 16px;
  --seavin-space-5: 24px;
  --seavin-space-6: 32px;
  --seavin-space-7: 48px;
  --seavin-space-8: 64px;

  /* Layout chrome */
  --seavin-header-height: 64px;
  --seavin-content-pad: 24px;

  /* Typography */
  --seavin-font: "Segoe UI", "PingFang SC", "Hiragino Sans", "Noto Sans KR", "Sarabun", "Microsoft YaHei", system-ui, sans-serif;
  --seavin-font-size: 15px;
  --seavin-line-height: 1.65;

  /* Gradients */
  --seavin-brand-gradient: linear-gradient(135deg, var(--seavin-brand-deep), var(--seavin-brand-accent));
  --seavin-hero-gradient:
    radial-gradient(circle at 20% 10%, rgba(255, 255, 255, 0.28), transparent 24rem),
    radial-gradient(circle at 85% 25%, rgba(255, 255, 255, 0.18), transparent 20rem),
    linear-gradient(135deg, #0c5363, #128a8e 58%, #18a5a1);

  /* Motion */
  --seavin-ease: 200ms ease;

  /* ---------- Compatibility aliases (do not redefine values elsewhere) ---------- */

  /* Portal global chrome (--sg-* / --sgh-* / --sgf-*) — alias into Foundation, no second palette */
  --sg-ocean-0: var(--seavin-bg);
  --sg-ocean-1: var(--seavin-bg-secondary);
  --sg-ink: var(--seavin-text-primary);
  --sg-muted: var(--seavin-text-secondary);
  --sgh-accent: var(--seavin-brand-accent);
  --sgh-accent-ink: var(--seavin-text-on-brand);
  --sgf-accent: var(--seavin-brand-accent);
  --sgf-bg: var(--seavin-bg-secondary);
  --sgf-ink: var(--seavin-text-primary);
  --sgf-line: var(--seavin-border);
  --sgf-muted: var(--seavin-text-secondary);

  /* Identity (--sv-*) */
  --sv-bg: var(--seavin-bg);
  --sv-bg-deep: var(--seavin-bg-secondary);
  --sv-card: var(--seavin-surface-strong);
  --sv-text: var(--seavin-text-primary);
  --sv-muted: var(--seavin-text-secondary);
  --sv-accent: var(--seavin-brand-primary);
  --sv-accent-ink: var(--seavin-text-on-brand);
  --sv-line: var(--seavin-border);
  --sv-danger: var(--seavin-danger);
  --sv-ok: var(--seavin-success);
  --sv-warn: var(--seavin-warning);
  --sv-radius: var(--seavin-radius-md);
  --sv-radius-sm: var(--seavin-radius-sm);
  --sv-shadow: var(--seavin-shadow-md);
  --sv-font: var(--seavin-font);
  --sv-line-height: var(--seavin-line-height);

  /* Navigation (--sea-* / page tokens) */
  --page-bg: var(--seavin-bg);
  --page-bg-secondary: var(--seavin-bg-secondary);
  --text-primary: var(--seavin-text-primary);
  --text-secondary: var(--seavin-text-secondary);
  --sea-deep: var(--seavin-brand-deep);
  --sea-primary: var(--seavin-brand-primary);
  --sea-accent: var(--seavin-brand-accent);
  --sea-blue: var(--seavin-brand-blue);
  --surface: var(--seavin-surface);
  --surface-strong: var(--seavin-surface-strong);
  --border: rgba(12, 92, 96, 0.13);
  --shadow: var(--seavin-shadow-md);
  --shadow-hover: var(--seavin-shadow-lg);
  --warning-text: var(--seavin-warning);
  --warning-bg: var(--seavin-warning-bg);
  --success: var(--seavin-success);
  --success-bg: var(--seavin-success-bg);
  --danger: var(--seavin-danger);
  --link: var(--seavin-brand-primary);
  --link-hover: var(--seavin-brand-deep);
  --focus-ring: var(--seavin-focus-ring);
  --brand-gradient: var(--seavin-brand-gradient);
  --hero-emphasis: linear-gradient(90deg, var(--seavin-brand-deep), var(--seavin-brand-accent));
  --radius: var(--seavin-radius-lg);
  --radius-sm: var(--seavin-radius-md);
  --header-h: var(--seavin-header-height);
  --font: var(--seavin-font);
  --ease: var(--seavin-ease);
  --ink: var(--seavin-text-primary);
  --ink-soft: var(--seavin-text-secondary);
  --bg: var(--seavin-bg);
  --bg-deep: var(--seavin-bg-secondary);
  --panel: var(--seavin-surface);
  --panel-solid: var(--seavin-surface-strong);
  --accent: var(--seavin-brand-primary);
  --accent-2: var(--seavin-brand-accent);
  --line: var(--border);

  /* Proto / V1.3 overlay */
  --proto-bg: var(--seavin-bg);
  --proto-paper: var(--seavin-surface-strong);
  --proto-ink: var(--seavin-text-primary);
  --proto-muted: var(--seavin-text-secondary);
  --proto-line: var(--seavin-border);
  --proto-sea: var(--seavin-brand-primary);
  --proto-sea2: var(--seavin-brand-accent);
  --proto-deep: var(--seavin-brand-deep);
  --proto-soft: var(--seavin-surface-muted);
  --proto-shadow: var(--seavin-shadow-md);
  --proto-max: var(--seavin-content-max);

  /* Admin / functional */
  --admin-bg: var(--seavin-bg);
  --admin-ink: var(--seavin-text-primary);
  --admin-accent: var(--seavin-brand-primary);
  --admin-line: var(--seavin-border);
  --admin-side: #102924;
  --admin-danger: var(--seavin-danger);
}

html[data-theme="dark"],
html[data-theme="dark"] :root {
  --seavin-bg: #071519;
  --seavin-bg-secondary: #0a2025;
  --seavin-surface: rgba(14, 35, 40, 0.88);
  --seavin-surface-strong: #10262c;
  --seavin-surface-muted: #12312f;
  --seavin-text-primary: #eef8f7;
  --seavin-text-secondary: #90a9aa;
  --seavin-text-muted: #7a9496;
  --seavin-border: rgba(110, 220, 207, 0.13);
  --seavin-border-strong: rgba(110, 220, 207, 0.28);
  --seavin-brand-primary: #53d5cb;
  --seavin-brand-accent: #1db7ae;
  --seavin-success: #53d5cb;
  --seavin-success-bg: #12312f;
  --seavin-warning: #e08a4c;
  --seavin-warning-bg: #3a2416;
  --seavin-danger: #f0a8a2;
  --seavin-danger-bg: #3a1a18;
  --seavin-info: #5fa7df;
  --seavin-info-bg: #123044;
  --seavin-shadow-sm: 0 8px 20px rgba(0, 0, 0, 0.22);
  --seavin-shadow-md: 0 18px 44px rgba(0, 0, 0, 0.28);
  --seavin-shadow-lg: 0 22px 52px rgba(0, 0, 0, 0.38);
  --seavin-focus-ring: 0 0 0 3px rgba(29, 183, 174, 0.28);
  --seavin-brand-gradient: linear-gradient(135deg, #0d4d68, #1db7ae);
}

@media (prefers-color-scheme: dark) {
  html[data-theme="system"],
  html:not([data-theme]) {
    --seavin-bg: #071519;
    --seavin-bg-secondary: #0a2025;
    --seavin-surface: rgba(14, 35, 40, 0.88);
    --seavin-surface-strong: #10262c;
    --seavin-surface-muted: #12312f;
    --seavin-text-primary: #eef8f7;
    --seavin-text-secondary: #90a9aa;
    --seavin-text-muted: #7a9496;
    --seavin-border: rgba(110, 220, 207, 0.13);
    --seavin-brand-primary: #53d5cb;
    --seavin-brand-accent: #1db7ae;
    --seavin-success: #53d5cb;
    --seavin-danger: #f0a8a2;
  --seavin-brand-gradient: linear-gradient(135deg, #0d4d68, #1db7ae);

  /* Portal chrome aliases follow Foundation dark surfaces */
  --sg-ocean-0: var(--seavin-bg);
  --sg-ocean-1: var(--seavin-bg-secondary);
  --sg-ink: var(--seavin-text-primary);
  --sg-muted: var(--seavin-text-secondary);
  --sgf-bg: var(--seavin-bg-secondary);
  --sgf-ink: var(--seavin-text-primary);
  --sgf-muted: var(--seavin-text-secondary);
  --sgf-line: var(--seavin-border);
  } 
}

/* Shared primitive language (safe defaults; shells may refine).
   Do NOT style generic .btn-primary here — Product Shell owns that selector. */
.seavin-btn,
.sv-btn {
  font-family: var(--seavin-font);
  border-radius: var(--seavin-radius-pill);
  transition: transform var(--seavin-ease), box-shadow var(--seavin-ease), filter var(--seavin-ease), background-color var(--seavin-ease);
}

.seavin-btn--primary,
.sv-btn.primary {
  background: var(--seavin-brand-gradient);
  color: var(--seavin-text-on-brand);
  border: 0;
  font-weight: 700;
  box-shadow: var(--seavin-shadow-sm);
}

.seavin-btn--secondary,
.sv-btn.secondary {
  background: var(--seavin-surface-strong);
  color: var(--seavin-brand-primary);
  border: 1px solid var(--seavin-border);
  font-weight: 650;
}

.seavin-btn--ghost {
  background: transparent;
  color: var(--seavin-brand-primary);
  border: 1px solid var(--seavin-border);
}

.seavin-btn--danger {
  background: var(--seavin-danger);
  color: #fff;
  border: 0;
}

.seavin-input,
.sv-card input[type="text"],
.sv-card input[type="email"],
.sv-card input[type="password"],
.sv-card input[type="search"],
.sv-card textarea,
.sv-card select {
  border: 1px solid var(--seavin-border);
  border-radius: var(--seavin-radius-sm);
  min-height: 44px;
  font: inherit;
  color: var(--seavin-text-primary);
  background: var(--seavin-surface-strong);
}

.seavin-input:focus,
.sv-card input:focus,
.sv-card textarea:focus,
.sv-card select:focus {
  outline: none;
  box-shadow: var(--seavin-focus-ring);
  border-color: var(--seavin-brand-accent);
}

.seavin-brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  font-weight: 800;
}

.seavin-brand-mark__logo {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  background: var(--seavin-brand-gradient);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 900;
}

.seavin-brand-mark__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.seavin-brand-mark__name {
  letter-spacing: 0.04em;
}

.seavin-brand-mark__sub {
  font-size: 12px;
  font-weight: 550;
  color: var(--seavin-text-secondary);
}

/* ---------- Shared form controls / modal / empty (user-visible surfaces) ---------- */

.seavin-check,
.seavin-radio {
  display: inline-flex;
  align-items: flex-start;
  gap: var(--seavin-space-2);
  color: var(--seavin-text-primary);
  font: inherit;
  line-height: 1.4;
  cursor: pointer;
}

.seavin-check input[type="checkbox"],
.seavin-radio input[type="radio"],
.sv-card input[type="checkbox"],
.sv-card input[type="radio"],
.auth-shell input[type="checkbox"],
.auth-shell input[type="radio"] {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--seavin-brand-primary);
  flex-shrink: 0;
  cursor: pointer;
}

.seavin-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  width: 44px;
  height: 26px;
  border-radius: var(--seavin-radius-pill);
  background: var(--seavin-border);
  transition: background-color var(--seavin-ease);
  cursor: pointer;
}

.seavin-switch input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.seavin-switch__thumb {
  width: 20px;
  height: 20px;
  margin-left: 3px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--seavin-shadow-sm);
  transition: transform var(--seavin-ease);
}

.seavin-switch:has(input:checked) {
  background: var(--seavin-brand-primary);
}

.seavin-switch:has(input:checked) .seavin-switch__thumb {
  transform: translateX(18px);
}

.seavin-switch:has(input:focus-visible) {
  box-shadow: var(--seavin-focus-ring);
}

.seavin-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: var(--seavin-space-5);
  background: color-mix(in srgb, var(--seavin-brand-deep) 42%, transparent);
  backdrop-filter: blur(6px);
}

.seavin-modal {
  width: min(480px, 100%);
  border-radius: var(--seavin-radius-lg);
  border: 1px solid var(--seavin-border);
  background: var(--seavin-surface-strong);
  color: var(--seavin-text-primary);
  box-shadow: var(--seavin-shadow-lg);
  padding: var(--seavin-space-5);
}

.seavin-modal__title {
  margin: 0 0 var(--seavin-space-3);
  font-size: 1.15rem;
  font-weight: 750;
}

.seavin-modal__body {
  margin: 0 0 var(--seavin-space-5);
  color: var(--seavin-text-secondary);
}

.seavin-modal__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--seavin-space-3);
  justify-content: flex-end;
}

.seavin-empty {
  display: grid;
  gap: var(--seavin-space-3);
  place-items: center;
  text-align: center;
  padding: var(--seavin-space-7) var(--seavin-space-5);
  border: 1px dashed var(--seavin-border);
  border-radius: var(--seavin-radius-lg);
  background: var(--seavin-surface-muted);
  color: var(--seavin-text-secondary);
}

.seavin-empty__title {
  margin: 0;
  color: var(--seavin-text-primary);
  font-weight: 700;
}

.seavin-empty__hint {
  margin: 0;
  max-width: 36ch;
  font-size: 0.92rem;
}