/* =============================================
   FlowBridge Design System
   Unified tokens, reset & shared components
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;600;700&display=swap');

/* ── Design Tokens ─────────────────────────── */
:root {
  /* Palette */
  --color-bg:             #faf9f7; /* BNK Warm Tinted BG */
  --color-bg-alt:         #f1eee9; /* BNK Light Gray / Warm Gray 11C Tint */
  --color-surface:        #ffffff;
  --color-surface-hover:  #faf9f7;
  --color-border:         #e3ded6; /* Warm Gray Border */
  --color-border-light:   #f0ede7;

  --color-text:           #38322a; /* BNK Dark Gray text */
  --color-text-secondary: #5c544a; /* Warm Gray 11C */
  --color-text-muted:     #948b7f;
  --color-text-inverse:   #ffffff;

  --color-primary:        #d7191f; /* BNK Red */
  --color-primary-hover:  #8b0304; /* BNK Dark Red */
  --color-primary-light:  #fdf2f2; /* BNK Red light tint */
  --color-primary-glow:   rgba(215, 25, 31, 0.08);

  --color-gold:           #896e4a; /* BNK Gold */
  --color-silver:         #909394; /* BNK Silver */

  --color-success:        #059669;
  --color-success-light:  #ecfdf5;
  --color-success-border: #a7f3d0;

  --color-warning:        #896e4a; /* Resolve warning/accent with Gold */
  --color-warning-light:  #fbf8f3;
  --color-warning-border: #e8dfd2;

  --color-danger:         #d7191f; /* BNK Red for error */
  --color-danger-light:   #fdf2f2;
  --color-danger-border:  #fecaca;

  --color-info:           #909394; /* Use BNK Silver for info */
  --color-info-light:     #f4f5f5;

  /* Typography */
  --font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-xs:   0.75rem;
  --font-sm:   0.8125rem;
  --font-base: 0.875rem;
  --font-md:   1rem;
  --font-lg:   1.125rem;
  --font-xl:   1.5rem;
  --font-2xl:  2rem;

  --fw-normal:   400;
  --fw-medium:   500;
  --fw-semibold: 600;
  --fw-bold:     700;

  --lh: 1.6;

  /* Spacing */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;

  /* Radii */
  --radius-sm:   6px;
  --radius-md:   8px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.02);
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.03), 0 1px 2px rgba(0,0,0,0.02);
  --shadow-md:  0 8px 24px -4px rgba(0,0,0,0.04), 0 2px 8px -2px rgba(0,0,0,0.02);
  --shadow-lg:  0 16px 32px -8px rgba(79, 70, 229, 0.06), 0 4px 12px -2px rgba(0,0,0,0.02);
  --shadow-xl:  0 24px 48px -12px rgba(0,0,0,0.08), 0 8px 24px -8px rgba(0,0,0,0.04);
  --shadow-primary: 0 6px 20px rgba(79, 70, 229, 0.22);

  /* Transitions */
  --ease-fast: 150ms ease;
  --ease-base: 200ms ease;
  --ease-slow: 300ms ease;
  --ease-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index */
  --z-dropdown: 100;
  --z-sticky:   200;
  --z-overlay:  500;
  --z-modal:    1000;
  --z-toast:    1100;
}

/* ── Reset ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-base);
  font-weight: var(--fw-normal);
  line-height: var(--lh);
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--ease-fast);
}
a:hover { color: var(--color-primary-hover); }

img { display: block; max-width: 100%; }

/* ── Focus ─────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ── Utilities ─────────────────────────────── */
.hidden  { display: none !important; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── Buttons ───────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0.6rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-base);
  font-weight: var(--fw-semibold);
  line-height: 1.4;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background var(--ease-base),
    border-color var(--ease-base),
    box-shadow var(--ease-base),
    transform var(--ease-fast);
}

.btn:hover:not(:disabled)   { transform: translateY(-1.5px); }
.btn:active:not(:disabled)  { transform: scale(0.97) translateY(0); }
.btn:disabled               { opacity: 0.45; cursor: not-allowed; transform: none; }

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
  color: var(--color-text-inverse);
  box-shadow: 0 2px 8px rgba(215, 25, 31, 0.15);
}
.btn--primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--color-primary-hover), var(--color-primary));
  box-shadow: 0 4px 12px rgba(215, 25, 31, 0.25);
}

.btn--outline {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn--outline:hover:not(:disabled) {
  background: var(--color-bg-alt);
  border-color: var(--color-text-muted);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
}
.btn--ghost:hover:not(:disabled) { background: var(--color-bg-alt); }

.btn--success {
  background: var(--color-success);
  color: var(--color-text-inverse);
  box-shadow: 0 2px 4px rgba(5,150,105,0.22);
}
.btn--success:hover:not(:disabled) {
  background: #047857;
  box-shadow: 0 4px 12px rgba(5,150,105,0.32);
}

.btn--danger {
  background: var(--color-danger);
  color: var(--color-text-inverse);
  box-shadow: 0 2px 4px rgba(220,38,38,0.22);
}
.btn--danger:hover:not(:disabled) {
  background: #b91c1c;
  box-shadow: 0 4px 12px rgba(220,38,38,0.32);
}

.btn--sm { padding: 0.3rem 0.65rem; font-size: var(--font-xs); }
.btn--lg { padding: 0.75rem 1.75rem; font-size: var(--font-md); }
.btn--block { width: 100%; }

/* ── Badges ────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: var(--font-xs);
  font-weight: var(--fw-semibold);
  line-height: 1.4;
  white-space: nowrap;
}

.badge--blue   { background: var(--color-primary-light); color: var(--color-primary); }
.badge--green  { background: var(--color-success-light); color: var(--color-success); }
.badge--yellow { background: var(--color-warning-light); color: var(--color-warning); }
.badge--red    { background: var(--color-danger-light);  color: var(--color-danger); }
.badge--gray   { background: var(--color-bg-alt);        color: var(--color-text-secondary); }

.badge--ok  { background: var(--color-success-light); color: var(--color-success); }
.badge--err { background: var(--color-danger-light);  color: var(--color-danger); }
.badge--loading {
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
}

/* ── Form Elements ─────────────────────────── */
.form-group { margin-bottom: var(--sp-4); }

.form-group label {
  display: block;
  font-size: var(--font-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--sp-2);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-base);
  color: var(--color-text);
  background: var(--color-surface);
  transition:
    border-color var(--ease-fast),
    box-shadow var(--ease-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

/* ── Error Box ─────────────────────────────── */
.error-msg {
  padding: 0.65rem 0.85rem;
  background: var(--color-danger-light);
  border: 1px solid var(--color-danger-border);
  border-radius: var(--radius-md);
  color: var(--color-danger);
  font-size: var(--font-sm);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* ── Panel ─────────────────────────────────── */
.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.25rem; /* 패널 간 세로 여백 추가 */
  transition: box-shadow var(--ease-base);
}

.panel__head {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border-light);
  font-weight: var(--fw-semibold);
  font-size: var(--font-base);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
}

.panel__body { padding: 1.25rem 1.5rem; }

/* ── Data Table ────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-sm);
}

.data-table--fixed {
  table-layout: fixed;
}
.data-table--fixed th:nth-child(1),
.data-table--fixed td:nth-child(1) {
  width: 25%; /* 문서번호 */
}
.data-table--fixed th:nth-child(2),
.data-table--fixed td:nth-child(2) {
  width: 35%; /* 요구기관 */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.data-table--fixed th:nth-child(3),
.data-table--fixed td:nth-child(3) {
  width: 15%; /* 상태 */
}
.data-table--fixed th:nth-child(4),
.data-table--fixed td:nth-child(4) {
  width: 25%; /* 등록일 / 수정일 */
}

.data-table th,
.data-table td {
  padding: 0.7rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.data-table th {
  background: var(--color-bg);
  font-weight: var(--fw-semibold);
  color: var(--color-text-secondary);
  font-size: var(--font-xs);
  letter-spacing: 0.02em;
}

.data-table tbody tr {
  cursor: pointer;
  transition: background var(--ease-fast);
}
.data-table tbody tr:hover { background: var(--color-primary-light); }

/* ── Progress Bar ──────────────────────────── */
.progress-bar {
  height: 4px;
  background: var(--color-border-light);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  width: 28%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
  border-radius: var(--radius-full);
  animation: pb-slide 1.4s ease-in-out infinite;
}

@keyframes pb-slide {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(450%); }
}

/* ── Stat Card ─────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.25rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow var(--ease-base), transform var(--ease-base);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
  opacity: 0;
  transition: opacity var(--ease-base);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.stat-card:hover::before { opacity: 1; }

.stat-card__label {
  font-size: var(--font-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--sp-1);
  font-weight: var(--fw-medium);
}

.stat-card__value {
  font-size: var(--font-xl);
  font-weight: var(--fw-bold);
  color: var(--color-primary);
}

.stat-card--warn .stat-card__value { color: var(--color-warning); }
.stat-card--warn::before { background: linear-gradient(90deg, var(--color-warning), #f59e0b); }
.stat-card--ok   .stat-card__value { color: var(--color-success); }
.stat-card--ok::before   { background: linear-gradient(90deg, var(--color-success), #34d399); }

/* ── Scrollbar ─────────────────────────────── */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track  { background: transparent; }
::-webkit-scrollbar-thumb  { background: var(--color-border); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }