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

:root {
  --primary: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --primary-bg: rgba(99, 102, 241, 0.08);
  --primary-bg-hover: rgba(99, 102, 241, 0.14);
  --accent: #06b6d4;
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-bg: rgba(239, 68, 68, 0.08);

  --bg: #0f172a;
  --bg-secondary: #1e293b;
  --surface: #1e293b;
  --surface-hover: #334155;
  --surface-raised: #293548;
  --border: rgba(148, 163, 184, 0.12);
  --border-light: rgba(148, 163, 184, 0.06);

  --text: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --shadow-lg: 0 20px 40px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.3);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: var(--surface-hover);
  color: var(--text);
  border-color: var(--text-muted);
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
  background: var(--danger);
  color: white;
}

.btn-nav {
  background: transparent;
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius);
}
.btn-nav:hover { background: var(--surface-hover); color: var(--text); }

.btn-month-nav {
  background: var(--surface);
  border: 1px solid var(--border);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: var(--text-secondary);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-month-nav:hover {
  background: var(--primary-bg);
  border-color: var(--primary);
  color: var(--primary-light);
}

.btn-small {
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  background: var(--primary-bg);
  color: var(--primary-light);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition);
  font-family: inherit;
}
.btn-small:hover {
  background: var(--primary-bg-hover);
  border-color: var(--primary);
}

.btn-full { width: 100%; padding: 14px; }

.btn-close {
  width: 36px;
  height: 36px;
  border: none;
  background: var(--surface-hover);
  color: var(--text-secondary);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.btn-close:hover { background: var(--danger-bg); color: var(--danger); }

.loading .btn-label { display: none; }
.btn.loading { pointer-events: none; opacity: 0.7; }
.btn.loading::after {
  content: '';
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.5s linear infinite;
}

/* ========== Forms ========== */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.input-wrapper {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  transition: color var(--transition);
}

.input-wrapper input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  transition: all var(--transition);
}

.form-group input:not(.input-wrapper input),
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  transition: all var(--transition);
}

.input-wrapper input:focus,
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.input-wrapper input:focus + .input-icon,
.input-wrapper:focus-within .input-icon {
  color: var(--primary-light);
}

.input-wrapper input::placeholder { color: var(--text-muted); }

.settings-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-hint {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
  line-height: 1.4;
}

/* ========== Auth Page ========== */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--bg);
}

.bg-blobs {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: blobFloat 20s ease-in-out infinite;
}

.blob-1 {
  width: 500px;
  height: 500px;
  background: rgba(99, 102, 241, 0.3);
  top: -10%;
  left: -10%;
  animation-delay: 0s;
}

.blob-2 {
  width: 400px;
  height: 400px;
  background: rgba(6, 182, 212, 0.25);
  bottom: -5%;
  right: -5%;
  animation-delay: -7s;
}

.blob-3 {
  width: 350px;
  height: 350px;
  background: rgba(139, 92, 246, 0.2);
  top: 40%;
  left: 50%;
  animation-delay: -14s;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -40px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(40px, 30px) scale(1.02); }
}

.auth-container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 960px;
  width: 90%;
  min-height: 600px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border: 1px solid var(--border);
}

.auth-branding {
  background: linear-gradient(135deg, var(--primary-dark), #7c3aed, var(--accent));
  padding: 48px 40px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.auth-branding::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/svg%3E");
}

.brand-content {
  position: relative;
  z-index: 1;
}

.brand-icon {
  width: 64px;
  height: 64px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.brand-title {
  font-size: 32px;
  font-weight: 900;
  color: white;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.brand-desc {
  color: rgba(255, 255, 255, 0.8);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 36px;
}

.brand-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feature {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  font-weight: 500;
}

.feature svg { color: rgba(255, 255, 255, 0.7); flex-shrink: 0; }

/* Auth card (right side) */
.auth-card {
  background: var(--surface);
  padding: 48px 40px;
  display: flex;
  align-items: center;
}

.auth-card-inner { width: 100%; }

.auth-title {
  font-size: 26px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 28px;
}

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

.tab-btn {
  flex: 1;
  padding: 10px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

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

.tab-btn:hover:not(.active) { color: var(--text-secondary); }

.error-msg {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--danger-bg);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 20px;
}

.error-msg svg { flex-shrink: 0; color: var(--danger); }

.hidden { display: none !important; }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}
.shake { animation: shake 0.5s ease-in-out; }

/* ========== Navbar ========== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 28px;
  background: rgba(30, 41, 59, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.nav-logo {
  font-size: 20px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 6px;
  background: var(--bg);
  border-radius: 100px;
  border: 1px solid var(--border);
  margin-right: 8px;
}

.user-avatar {
  width: 30px;
  height: 30px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: white;
}

.user-email {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.btn-label { margin-left: 0; }

/* ========== Main Content ========== */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 32px;
}

/* ========== Page Header ========== */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

.page-title {
  font-size: 28px;
  font-weight: 900;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--text) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-subtitle {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

/* ========== Stat Cards ========== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--border);
  transition: all var(--transition);
}

.stat-card:hover {
  border-color: rgba(148, 163, 184, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.stat-card-highlight {
  background: linear-gradient(135deg, var(--primary-dark), #7c3aed);
  border-color: transparent;
}
.stat-card-highlight:hover { border-color: transparent; }
.stat-card-highlight .stat-label { color: rgba(255,255,255,0.7); }
.stat-card-highlight .stat-value { color: white; }

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon-hours { background: var(--primary-bg); color: var(--primary-light); }
.stat-icon-base { background: var(--success-bg); color: var(--success); }
.stat-icon-suppl { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.stat-icon-total { background: rgba(255,255,255,0.15); color: white; }

.stat-info { min-width: 0; }

.stat-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.stat-value {
  display: block;
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ========== Month Navigation ========== */
.month-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.period-label-group {
  text-align: center;
  min-width: 200px;
}

.month-label {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.period-range {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-light);
  margin-top: 2px;
  letter-spacing: 0.02em;
}

/* ========== Dashboard Grid ========== */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ========== Calendar ========== */
.calendar-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.calendar-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.calendar-title svg { color: var(--text-muted); }

.calendar-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin-bottom: 10px;
}

.calendar-header div {
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 8px 0;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  position: relative;
  background: var(--bg);
}

.calendar-day:hover {
  background: var(--surface-hover);
  border-color: var(--primary);
  transform: scale(1.06);
  z-index: 2;
}

.calendar-day.empty {
  cursor: default;
  border: none;
  background: transparent;
}
.calendar-day.empty:hover {
  background: transparent;
  border-color: transparent;
  transform: none;
}

.calendar-day .day-number {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-secondary);
}

.calendar-day .day-hours {
  font-size: 11px;
  font-weight: 800;
  color: var(--primary-light);
  margin-top: 3px;
  background: var(--primary-bg);
  padding: 1px 6px;
  border-radius: 4px;
}

.calendar-day.has-entry {
  background: var(--primary-bg);
  border-color: rgba(99, 102, 241, 0.2);
}
.calendar-day.has-entry .day-number {
  color: var(--primary-light);
}

.calendar-day.today {
  border-color: var(--primary);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.2);
}
.calendar-day.today .day-number {
  color: var(--primary-light);
  font-weight: 800;
}

.calendar-day.weekend .day-number {
  color: var(--text-muted);
}

.calendar-day.out-of-period {
  opacity: 0.35;
}

.calendar-day.out-of-period:hover {
  opacity: 0.7;
}

/* ========== Summary Section ========== */
.summary-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.section-header {
  margin-bottom: 18px;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-secondary);
}

.section-title svg { color: var(--text-muted); }

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.summary-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.summary-table th {
  text-align: left;
  padding: 12px 16px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.summary-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary);
}

.summary-table tbody tr:hover {
  background: var(--bg);
}

.summary-table tbody tr:last-child td {
  border-bottom: none;
}

.summary-totals td {
  background: var(--bg);
  border-bottom: none;
  border-top: 2px solid var(--primary);
  color: var(--text);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.empty-icon {
  width: 64px;
  height: 64px;
  background: var(--primary-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.empty-icon svg {
  color: var(--primary-light);
  opacity: 0.6;
}

.empty-state p {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.empty-state span { font-size: 13px; }

.empty-supplements {
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  font-size: 13px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}

/* ========== Modals ========== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  width: 90%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.3s ease;
}

.modal-wide { max-width: 580px; }

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

.modal-header h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.modal-header h3 svg { color: var(--text-muted); }

.modal-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 28px;
  gap: 12px;
}

.modal-actions-right {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

/* ========== Supplements ========== */
.supplements-section {
  margin-top: 12px;
}

.supplements-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.supplements-header h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-secondary);
}

.supplements-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.supplement-row {
  display: grid;
  grid-template-columns: 1fr 100px 100px 36px;
  gap: 8px;
  align-items: center;
  padding: 12px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
}

.supplement-row input, .supplement-row select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
  transition: border-color var(--transition);
}

.supplement-row input:focus, .supplement-row select:focus {
  outline: none;
  border-color: var(--primary);
}

.supplement-row select {
  cursor: pointer;
}

.btn-remove {
  width: 36px;
  height: 36px;
  border: none;
  background: var(--danger-bg);
  color: var(--danger);
  border-radius: 8px;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.btn-remove:hover { background: var(--danger); color: white; }

/* ========== Loading ========== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.loader {
  text-align: center;
}

.loader-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin: 0 auto 20px;
  animation: pulse 2s ease-in-out infinite;
}

.loader p {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.8; }
}

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

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .auth-container {
    grid-template-columns: 1fr;
    max-width: 440px;
  }

  .auth-branding { display: none; }
  .auth-card { padding: 36px 28px; }

  .navbar { padding: 10px 16px; }
  .nav-logo { font-size: 16px; }
  .nav-logo-icon { width: 32px; height: 32px; }
  .nav-logo-icon svg { width: 18px; height: 18px; }
  .user-badge { display: none; }

  .main-content { padding: 16px 14px; }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .page-title { font-size: 22px; }

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .stat-card { padding: 16px 14px; gap: 12px; }
  .stat-icon { width: 42px; height: 42px; }
  .stat-value { font-size: 18px; }

  .dashboard-grid { grid-template-columns: 1fr; }

  .calendar-container { padding: 16px; }
  .calendar-grid { gap: 4px; }
  .calendar-day .day-number { font-size: 12px; }
  .calendar-day .day-hours { font-size: 9px; padding: 0 4px; }

  .summary-section { padding: 16px; }
  .summary-table { font-size: 12px; }
  .summary-table th, .summary-table td { padding: 8px 10px; }

  .supplement-row {
    grid-template-columns: 1fr 80px 80px 36px;
    padding: 8px;
  }

  .modal-content { padding: 24px 20px; }
  .month-label { font-size: 15px; min-width: auto; }
  .settings-row { grid-template-columns: 1fr; }
  .period-label-group { min-width: 140px; }
}

@media (max-width: 480px) {
  .stats-row { gap: 8px; }
  .stat-card { flex-direction: column; text-align: center; gap: 8px; padding: 12px; }
  .stat-value { font-size: 16px; }
  .stat-label { font-size: 10px; }
}