/* ==========================================================================
   Innovation Budget Tracker - Main Stylesheet (Vanilla CSS)
   ========================================================================== */

:root {
  --primary: #1e40af;         /* 깊은 신뢰감의 네이비 블루 */
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --secondary: #475569;
  --secondary-light: #f1f5f9;
  --success: #16a34a;
  --success-light: #f0fdf4;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Navigation */
.navbar {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--primary);
  text-decoration: none;
}

.nav-brand .badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
}

.nav-item a {
  text-decoration: none;
  color: var(--secondary);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.nav-item a:hover,
.nav-item a.active {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-user {
  font-size: 0.9rem;
  color: var(--secondary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-user strong {
  color: var(--text-main);
}

/* Layout & Containers */
.container {
  max-width: 1240px;
  width: 100%;
  margin: 0 auto;
  padding: 1.75rem;
  flex: 1;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Login Page Specific */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e3a8a 0%, #0f172a 100%);
  padding: 1.5rem;
}

.login-card {
  background: var(--bg-card);
  width: 100%;
  max-width: 440px;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-title {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.login-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1.2rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--text-main);
}

.form-label .required {
  color: var(--danger);
  margin-left: 0.2rem;
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 0.925rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: #fff;
  color: var(--text-main);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.15);
}

select.form-control {
  cursor: pointer;
}

/* Chrome, Safari, Edge, Opera: Remove number input spin buttons */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox: Remove number input spin buttons */
input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}

textarea.form-control {
  resize: vertical;
  min-height: 80px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.15rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: #f1f5f9;
  color: var(--secondary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: #e2e8f0;
  color: var(--text-main);
}

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

.btn-danger:hover {
  background-color: #b91c1c;
}

.btn-success {
  background-color: var(--success);
  color: #fff;
}

.btn-success:hover {
  background-color: #15803d;
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
}

/* Alerts */
.alert {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.alert-danger {
  background-color: var(--danger-light);
  color: var(--danger);
  border: 1px solid #fecaca;
}

.alert-success {
  background-color: var(--success-light);
  color: var(--success);
  border: 1px solid #bbf7d0;
}

.alert-warning {
  background-color: var(--warning-light);
  color: var(--warning);
  border: 1px solid #fed7aa;
}

/* Cards */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  text-align: left;
}

.table th {
  background-color: #f8fafc;
  color: var(--secondary);
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  vertical-align: middle;
}

.table tbody tr:hover {
  background-color: #f8fafc;
}

.table .text-right {
  text-align: right;
}

.table .text-center {
  text-align: center;
}

/* Badges & Progress Bar */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
}

.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-secondary { background: var(--secondary-light); color: var(--secondary); }

.progress-container {
  width: 100%;
  background-color: #e2e8f0;
  border-radius: 9999px;
  height: 8px;
  overflow: hidden;
  margin-top: 0.35rem;
}

.progress-bar {
  height: 100%;
  background-color: var(--primary);
  border-radius: 9999px;
  transition: width 0.3s ease;
}

.progress-bar.warning { background-color: var(--warning); }
.progress-bar.danger { background-color: var(--danger); }
.progress-bar.success { background-color: var(--success); }

/* Stat Cards */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}

.stat-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Footer */
.footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-card);
  margin-top: auto;
}

/* ==========================================================================
   Filter Bar & View Switcher Styles
   ========================================================================== */
.filter-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-main);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  margin-bottom: 1rem;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.view-switcher {
  display: inline-flex;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  overflow: hidden;
}

.view-btn {
  border: none;
  background: transparent;
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.15s ease;
}

.view-btn.active {
  background: var(--primary);
  color: #ffffff;
}

.view-btn:not(.active):hover {
  background: var(--secondary-light);
  color: var(--text-main);
}

/* Expandable Accordion Row */
.table tbody tr.main-row {
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.table tbody tr.main-row:hover {
  background-color: var(--primary-light) !important;
}

.table tbody tr.detail-row {
  display: none;
  background-color: #fafbfc;
}

.table tbody tr.detail-row.open {
  display: table-row;
}

.row-detail-box {
  padding: 1.25rem 1.5rem;
  border-left: 4px solid var(--primary);
  background: #ffffff;
  border-radius: var(--radius-sm);
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.03);
  margin: 0.5rem 0;
}

/* ==========================================================================
   Timeline View Styles
   ========================================================================== */
.timeline-container {
  position: relative;
  padding: 1rem 0;
}

.timeline-date-group {
  margin-bottom: 2rem;
  position: relative;
}

.timeline-date-header {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  border: 1px solid #bfdbfe;
}

.timeline-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1rem;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.timeline-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.timeline-card.status-품의 {
  border-left: 4px solid #d97706;
}

.timeline-card.status-지출결의 {
  border-left: 4px solid #4338ca;
}

.timeline-card.status-지출완료 {
  border-left: 4px solid #16a34a;
}

.timeline-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.timeline-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.timeline-card-desc {
  font-size: 0.875rem;
  color: var(--text-main);
  background: var(--bg-main);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  margin: 0.75rem 0;
  line-height: 1.45;
}

.timeline-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border-color);
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Category Analysis Layout */
.category-analysis-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 1.25rem;
  padding-top: 0.5rem;
  align-items: stretch;
}

.category-table th,
.category-table td {
  padding: 0.55rem 0.75rem;
  white-space: nowrap;
}

@media (max-width: 900px) {
  .category-analysis-grid {
    grid-template-columns: 1fr;
  }
}

/* Fiscal Year Selector Card & Tabs */
.fiscal-year-card {
  transition: all 0.2s ease;
}

.fiscal-year-tabs .btn {
  transition: all 0.15s ease;
  letter-spacing: -0.01em;
}

.fiscal-year-tabs .btn-secondary:hover {
  background-color: var(--primary-light);
  color: var(--primary);
  border-color: #bfdbfe;
}