@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;800&family=Inter:wght@400;500;700&display=swap');

:root {
  --surface: #0f1219;
  --surface-container-lowest: #1a1f2e;
  --surface-container-low: #151a25;
  --surface-container: #1e2433;
  --surface-container-high: #252b3b;
  --surface-variant: #2a3144;
  --primary: #4a8eff;
  --primary-container: #2563eb;
  --primary-soft: rgba(74, 142, 255, 0.12);
  --on-primary: #ffffff;
  --secondary: #2dd4bf;
  --secondary-container: rgba(20, 184, 166, 0.15);
  --tertiary: #f97316;
  --tertiary-container: rgba(249, 115, 22, 0.12);
  --error: #f87171;
  --error-container: rgba(248, 113, 113, 0.12);
  --success: #34d399;
  --success-container: rgba(52, 211, 153, 0.12);
  --on-surface: #e2e8f0;
  --on-surface-variant: #94a3b8;
  --outline-variant: rgba(148, 163, 184, 0.1);
  --font-display: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--on-surface);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.sidebar {
  width: 260px;
  background: var(--surface-container-lowest);
  display: flex;
  flex-direction: column;
  padding: 2rem 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-brand {
  padding: 0 1.5rem 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar-brand .logo {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
}

.sidebar-brand h1 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--on-surface);
  letter-spacing: -0.02em;
}

.sidebar-brand span {
  font-size: 0.7rem;
  color: var(--on-surface-variant);
  font-weight: 400;
  display: block;
  margin-top: 2px;
}

.sidebar-nav { flex: 1; padding: 0 0.75rem; }

.nav-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  color: var(--on-surface-variant);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-body);
}

.nav-item:hover { background: var(--surface-variant); color: var(--on-surface); }
.nav-item.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--outline-variant);
  margin-top: auto;
}

.sidebar-footer button {
  display: flex; align-items: center; gap: 0.5rem;
  background: none; border: none; color: var(--error);
  cursor: pointer; font-size: 0.85rem; font-family: var(--font-body);
  padding: 0.5rem 0.75rem; border-radius: var(--radius-sm);
  transition: var(--transition); width: 100%;
}
.sidebar-footer button:hover { background: var(--error-container); }

.main-content {
  margin-left: 260px;
  flex: 1;
  padding: 2rem 2.5rem;
  min-height: 100vh;
}

.page-header {
  margin-bottom: 2rem;
}
.page-header h2 {
  font-family: var(--font-display); font-size: 1.75rem; font-weight: 800;
  letter-spacing: -0.02em;
}
.page-header p {
  color: var(--on-surface-variant); margin-top: 0.25rem; font-size: 0.9rem;
}

/* ── Cards ─────────────────────────────────────────── */
.card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  transition: var(--transition);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  display: flex; align-items: flex-start; gap: 1rem;
  transition: var(--transition);
}
.stat-card:hover { background: var(--surface-container); }

.stat-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.stat-icon.blue { background: var(--primary-soft); color: var(--primary); }
.stat-icon.teal { background: var(--secondary-container); color: var(--secondary); }
.stat-icon.orange { background: var(--tertiary-container); color: var(--tertiary); }
.stat-icon.green { background: var(--success-container); color: var(--success); }

.stat-info h3 {
  font-family: var(--font-display); font-size: 1.6rem; font-weight: 800;
  line-height: 1.1; letter-spacing: -0.02em;
}
.stat-info p {
  color: var(--on-surface-variant); font-size: 0.8rem; margin-top: 0.2rem;
}

/* ── Charts ────────────────────────────────────────── */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.chart-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
}
.chart-card h3 {
  font-family: var(--font-display); font-size: 1rem; font-weight: 700;
  margin-bottom: 1rem; letter-spacing: -0.01em;
}
.chart-card canvas { width: 100% !important; max-height: 280px; }

/* ── Widget Cards ─────────────────────────────────── */
.widget-card {
  position: relative;
}
.widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.widget-header h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
}
.widget-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.widget-card:hover .widget-actions {
  opacity: 1;
}
.widget-meta {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.75rem;
  font-size: 0.72rem;
  color: var(--on-surface-variant);
}

.widget-add-card {
  border: 2px dashed var(--outline-variant);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: transparent;
}
.widget-add-card:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
  transform: translateY(-2px);
}
.widget-add-content {
  text-align: center;
  color: var(--on-surface-variant);
  transition: color 0.2s;
}
.widget-add-card:hover .widget-add-content {
  color: var(--primary);
}
.widget-add-icon {
  font-size: 3rem;
  font-weight: 300;
  line-height: 1;
  margin-bottom: 0.75rem;
}
.widget-add-content p {
  font-size: 0.9rem;
  font-weight: 500;
}

/* ── Filters ───────────────────────────────────────── */
.filters-bar {
  display: flex; gap: 0.75rem; flex-wrap: wrap;
  margin-bottom: 1.5rem; align-items: center;
}
.filters-bar select,
.filters-bar input {
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  color: var(--on-surface);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.85rem;
  outline: none;
  transition: var(--transition);
  appearance: none;
  min-width: 160px;
}
.filters-bar select:focus,
.filters-bar input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(74, 142, 255, 0.15);
}

/* ── Table ─────────────────────────────────────────── */
.table-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  overflow-x: auto;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
}
.table-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.25rem 1.5rem;
}
.table-header h3 {
  font-family: var(--font-display); font-size: 1.1rem; font-weight: 700;
}

table {
  width: 100%;
  border-collapse: collapse;
}
thead th {
  text-align: left;
  padding: 0.75rem 1.5rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--on-surface-variant);
  font-weight: 600;
  background: var(--surface-container-low);
}
tbody td {
  padding: 0.85rem 1.5rem;
  font-size: 0.9rem;
  border-top: 1px solid var(--outline-variant);
  vertical-align: middle;
}
tbody tr { transition: var(--transition); }
tbody tr:hover { background: var(--surface-container); }

.badge {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.badge-blue { background: var(--primary-soft); color: var(--primary); }
.badge-teal { background: var(--secondary-container); color: var(--secondary); }
.badge-orange { background: var(--tertiary-container); color: var(--tertiary); }
.badge-purple { background: rgba(167, 139, 250, 0.15); color: #a78bfa; }
.badge-red { background: var(--error-container); color: var(--error); }

/* ── Collections Grid ─────────────────────────────── */
.collections-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
}
.collection-card {
  transition: var(--transition);
}
.collection-card:hover {
  background: var(--surface-container);
}

/* ── Buttons ───────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-primary-fill {
  background: linear-gradient(135deg, var(--primary-container), var(--primary));
  color: var(--on-primary);
}
.btn-primary-fill:hover { filter: brightness(1.1); transform: translateY(-1px); }

.btn-ghost {
  background: var(--surface-container);
  color: var(--on-surface-variant);
}
.btn-ghost:hover { background: var(--surface-variant); color: var(--on-surface); }

.btn-danger {
  background: var(--error-container);
  color: var(--error);
}
.btn-danger:hover { filter: brightness(1.15); }

.btn-icon {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  display: inline-flex; align-items: center; justify-content: center;
  background: none; border: none; color: var(--on-surface-variant);
  cursor: pointer; transition: var(--transition);
  font-size: 1rem;
}
.btn-icon:hover { background: var(--surface-variant); color: var(--on-surface); }
.btn-icon.danger:hover { background: var(--error-container); color: var(--error); }

/* ── Modal ─────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease;
}
.modal-overlay.active { opacity: 1; pointer-events: all; }

.modal {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  width: 100%; max-width: 560px;
  padding: 2rem;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-overlay.active .modal { transform: translateY(0) scale(1); }

.modal h3 {
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 800;
  margin-bottom: 1.5rem;
}

.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block; font-size: 0.8rem; font-weight: 600;
  color: var(--on-surface-variant); margin-bottom: 0.4rem;
  text-transform: uppercase; letter-spacing: 0.04em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  color: var(--on-surface);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
  resize: vertical;
}
.form-group textarea { min-height: 100px; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(74, 142, 255, 0.15);
}

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

.modal-actions {
  display: flex; gap: 0.75rem; justify-content: flex-end;
  margin-top: 1.5rem;
}

/* ── Login ─────────────────────────────────────────── */
.login-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: var(--surface);
}
.login-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  width: 100%; max-width: 400px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.login-card .logo-wrap {
  display: flex; justify-content: center; margin-bottom: 1.5rem;
}
.login-card .logo-wrap .logo {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
}
.login-card h2 {
  font-family: var(--font-display); font-weight: 800;
  text-align: center; margin-bottom: 0.5rem;
}
.login-card p {
  text-align: center; color: var(--on-surface-variant);
  font-size: 0.9rem; margin-bottom: 1.5rem;
}
.login-card .error-msg {
  background: var(--error-container); color: var(--error);
  padding: 0.6rem 1rem; border-radius: var(--radius-md);
  font-size: 0.85rem; margin-bottom: 1rem; display: none;
}
.login-card button {
  width: 100%; margin-top: 0.5rem;
}

/* ── Hidden pages ──────────────────────────────────── */
.page { display: none; }
.page.active { display: block; }

/* ── Toast ─────────────────────────────────────────── */
.toast-container {
  position: fixed; top: 1.5rem; right: 1.5rem;
  z-index: 2000; display: flex; flex-direction: column; gap: 0.5rem;
}
.toast {
  background: var(--surface-container-high);
  color: var(--on-surface);
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
  display: flex; align-items: center; gap: 0.5rem;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--error); }

@keyframes toastIn { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toastOut { from { opacity: 1; } to { opacity: 0; transform: translateY(-10px); } }

/* ── Responsive ────────────────────────────────────── */
.mobile-toggle {
  display: none;
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  width: 44px; height: 44px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  align-items: center; justify-content: center;
  cursor: pointer;
}

@media (max-width: 900px) {
  .mobile-toggle { display: flex; }
  .sidebar { transform: translateX(-100%); width: 280px; }
  .sidebar.open { transform: translateX(0); box-shadow: 4px 0 24px rgba(0,0,0,0.5); }
  .main-content { margin-left: 0; padding: 1.5rem; }
  .charts-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  
  /* Modal responsive tweaks */
  .modal { padding: 1.5rem; max-height: 85vh; width: 92%; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .modal-actions { flex-direction: column; }
  .modal-actions .btn { width: 100%; justify-content: center; }
}

/* ── Scrollbar ─────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--surface-variant); border-radius: 3px; }

/* ── Empty state ───────────────────────────────────── */
.empty-state {
  text-align: center; padding: 3rem 1rem;
  color: var(--on-surface-variant);
}
.empty-state .icon { font-size: 2.5rem; margin-bottom: 1rem; opacity: 0.5; }
.empty-state p { font-size: 0.9rem; }

/* ── Measure row image ─────────────────────────────── */
.measure-thumb {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  background: var(--surface-container);
}

/* ── Percentage bar ────────────────────────────────── */
.pct-bar {
  display: flex; height: 6px; border-radius: 3px; overflow: hidden;
  background: var(--surface-container);
}
.pct-bar .pour { background: var(--secondary); }
.pct-bar .contre { background: var(--error); }

/* loading spinner */
.spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--surface-variant);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 2rem auto;
}
@keyframes spin { to { transform: rotate(360deg); } }