/* FinTrack — Light/Modern Design System */

:root {
  --bg: #f0f2f0;
  --surface: #f7f9f7;
  --surface-2: #e8ebe8;
  --border: #cfd6cf;
  --border-hover: #adb8ad;
  --text-primary: #1a201a;
  --text-secondary: #485848;
  --text-muted: #7a8e7a;
  --accent: #1c6b32;
  --accent-light: #e4f2e8;
  --accent-hover: #155228;
  --success: #2f9e44;
  --success-light: #ebfbee;
  --warning: #e67700;
  --warning-light: #fff3bf;
  --danger: #c92a2a;
  --danger-light: #fff5f5;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 16px rgba(0,0,0,0.07), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10), 0 2px 8px rgba(0,0,0,0.06);
  --nav-width: 240px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html { font-size: 15px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Typography ── */
h1 { font-size: 1.75rem; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 1.3rem; font-weight: 600; letter-spacing: -0.01em; }
h3 { font-size: 1.05rem; font-weight: 600; }
p  { color: var(--text-secondary); }

/* ── Auth Layout ── */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  background: linear-gradient(135deg, #eff2ef 0%, #dde8dd 100%);
}

.auth-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 48px 44px;
  width: 100%;
  max-width: 420px;
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
}

.auth-logo .logo-mark {
  width: 38px;
  height: 38px;
  object-fit: contain;
  border-radius: 9px;
}

.auth-logo .logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.auth-logo .logo-text span {
  color: var(--accent);
}

.auth-card h1 { font-size: 1.45rem; margin-bottom: 6px; }
.auth-card p  { margin-bottom: 28px; font-size: 0.9rem; }

.auth-tabs {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px;
  gap: 4px;
  margin-bottom: 28px;
  background: var(--surface-2);
}

.auth-tab {
  flex: 1;
  padding: 8px;
  border: none;
  border-radius: 7px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.auth-tab.active {
  background: var(--surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* ── Forms ── */
.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--surface);
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59,91,219,0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 20px;
  border-radius: var(--radius);
  border: none;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(59,91,219,0.3); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--surface-2);
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}
.btn-secondary:hover { border-color: var(--border-hover); background: var(--surface); }

.btn-danger { background: var(--danger-light); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: white; }

.btn-success { background: var(--success-light); color: var(--success); }
.btn-success:hover { background: var(--success); color: white; }

.btn-full { width: 100%; }
.btn-sm { padding: 7px 14px; font-size: 0.82rem; }
.btn-icon { padding: 8px; }

/* ── App Shell ── */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar Nav ── */
.sidebar {
  width: var(--nav-width);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  transition: transform 0.2s;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo .logo-mark {
  width: 34px;
  height: 34px;
  object-fit: contain;
  border-radius: 8px;
}

.sidebar-logo .logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sidebar-logo .logo-text span { color: var(--accent); }

.nav-section {
  padding: 16px 12px 8px;
}

.nav-section-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 0 8px;
  margin-bottom: 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.12s;
  margin-bottom: 2px;
}

.nav-item:hover { background: var(--surface-2); color: var(--text-primary); }
.nav-item.active { background: var(--accent-light); color: var(--accent); font-weight: 600; }

.nav-item svg { flex-shrink: 0; opacity: 0.7; }
.nav-item.active svg { opacity: 1; }

.nav-badge {
  margin-left: auto;
  background: var(--accent);
  color: white;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 20px;
}

.sidebar-footer {
  margin-top: auto;
  padding: 16px 12px;
  border-top: 1px solid var(--border);
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--surface-2);
}

.user-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.user-info { flex: 1; min-width: 0; }
.user-email { font-size: 0.78rem; font-weight: 500; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role  { font-size: 0.7rem; color: var(--text-muted); }

.btn-signout {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 5px;
  transition: color 0.12s;
  flex-shrink: 0;
}
.btn-signout:hover { color: var(--danger); }

/* ── Main Content ── */
.main-content {
  margin-left: var(--nav-width);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page-header {
  padding: 32px 36px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.page-header-left h1 { margin-bottom: 2px; }
.page-header-left p  { font-size: 0.88rem; margin: 0; }

.page-content { padding: 28px 36px 48px; }

/* ── Cards ── */
.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 24px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.card-header h2 { font-size: 1rem; }
.card-header h3 { font-size: 0.95rem; }

/* ── Stat Cards ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1.1;
}

.stat-value.positive { color: var(--success); }
.stat-value.negative { color: var(--danger); }

.stat-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 5px;
}

.stat-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

/* ── Progress Bars ── */
.progress-bar {
  height: 7px;
  background: var(--surface-2);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-fill {
  height: 100%;
  border-radius: 99px;
  background: var(--accent);
  transition: width 0.5s ease;
}

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

/* ── Tables ── */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  text-align: left;
  padding: 10px 14px;
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 12px 14px;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--surface-2); }

/* ── Tags / Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 0.73rem;
  font-weight: 600;
}

.badge-blue    { background: var(--accent-light);   color: var(--accent); }
.badge-green   { background: var(--success-light);  color: var(--success); }
.badge-yellow  { background: var(--warning-light);  color: var(--warning); }
.badge-red     { background: var(--danger-light);   color: var(--danger); }
.badge-grey    { background: var(--surface-2);       color: var(--text-secondary); }

/* ── Month Selector ── */
.month-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 10px;
}

.month-nav button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 4px;
  border-radius: 5px;
  transition: color 0.12s;
}
.month-nav button:hover { color: var(--text-primary); }

.month-nav .month-label {
  font-size: 0.9rem;
  font-weight: 600;
  min-width: 110px;
  text-align: center;
  color: var(--text-primary);
}

/* ── Toast ── */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: var(--text-primary);
  color: white;
  padding: 12px 18px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.2s ease;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 260px;
}

.toast.success { background: var(--success); }
.toast.error   { background: var(--danger); }

@keyframes slideIn {
  from { transform: translateX(20px); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state svg { opacity: 0.3; margin-bottom: 12px; }
.empty-state h3  { color: var(--text-secondary); margin-bottom: 6px; }
.empty-state p   { font-size: 0.875rem; margin-bottom: 16px; }

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
}

.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 32px;
  width: 100%;
  max-width: 480px;
  transform: scale(0.96);
  transition: transform 0.15s;
}

.modal-overlay.open .modal { transform: scale(1); }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 5px;
  font-size: 1.2rem;
}
.modal-close:hover { color: var(--text-primary); }

.modal-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 24px;
}

/* ── Divider ── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 24px 0;
}

/* ── Loading ── */
.spinner {
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.spinner.dark { border-color: rgba(59,91,219,0.2); border-top-color: var(--accent); }

@keyframes spin { to { transform: rotate(360deg); } }

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
}

/* ── Responsive ── */
.mobile-topbar {
  display: none;
  align-items: center;
  gap: 10px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  padding: 0 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  z-index: 300;
}

.mobile-topbar .logo-mark {
  width: 28px;
  height: 28px;
  object-fit: contain;
  border-radius: 7px;
}

.mobile-topbar .logo-text {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.mobile-topbar .logo-text span { color: var(--accent); }

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  flex-shrink: 0;
  transition: background 0.12s;
}
.mobile-menu-btn:hover { background: var(--surface-2); }
.mobile-menu-btn .icon-close { display: none; }
.mobile-menu-btn.is-open .icon-hamburger { display: none; }
.mobile-menu-btn.is-open .icon-close { display: block; }

@media (max-width: 768px) {
  :root { --nav-width: 0px; }
  .mobile-topbar { display: flex; }
  .mobile-menu-btn { display: flex; }
  .sidebar { top: 56px; height: calc(100vh - 56px); transform: translateX(-240px); }
  .sidebar.open { transform: translateX(0); width: 240px; }
  .sidebar-logo { display: none; }
  .main-content { margin-left: 0; padding-top: 56px; }
  .page-header { padding: 20px 20px 0; }
  .page-content { padding: 20px 20px 40px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .auth-card { padding: 32px 24px; }
}