/* --- VARIABLES Y TOKENS DE DISEÑO --- */
:root {
  /* Fuentes */
  --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Tema Oscuro (Defecto) */
  --bg-primary: #0b0f19;
  --bg-secondary: #131926;
  --bg-tertiary: #1d263b;
  --bg-card: rgba(22, 29, 47, 0.7);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #3b82f6;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.3);
  --glass-bg: rgba(19, 25, 38, 0.8);
  --glass-border: rgba(255, 255, 255, 0.05);
  --card-glow: rgba(59, 130, 246, 0.03);

  /* Acciones & Estados */
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #10b981;
  --success-hover: #059669;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --warning: #f59e0b;
  
  /* Gradientes */
  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
  --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-danger: linear-gradient(135deg, #ef4444 0%, #b91c1c 100%);
  --gradient-dark: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  
  /* Radios */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transición estándar */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Tema Claro */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.8);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: rgba(15, 23, 42, 0.08);
  --border-focus: #3b82f6;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(15, 23, 42, 0.05);
  --card-glow: rgba(59, 130, 246, 0.01);
}

/* --- RESET & CONFIG GENERAL --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Barra de desplazamiento */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* --- LAYOUT DE LA APLICACIÓN --- */
.app-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

/* --- SIDEBAR (MENÚ LATERAL) --- */
.sidebar {
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 24px;
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  z-index: 100;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 8px 16px rgba(59, 130, 246, 0.3);
}

.brand-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Indicador de usuario conectado */
.user-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.user-avatar {
  width: 38px;
  height: 38px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.user-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.user-display-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-label {
  font-size: 0.75rem;
  color: var(--success);
  font-weight: 500;
}

.sidebar-menu {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}

.menu-item i {
  width: 20px;
  height: 20px;
}

.menu-item:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  transform: translateX(4px);
}

.menu-item.active {
  color: #fff;
  background: var(--gradient-primary);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.25);
}

.sidebar-footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
}

.btn-theme-toggle, .btn-logout {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  width: 100%;
  transition: var(--transition);
}

.btn-theme-toggle:hover, .btn-logout:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

[data-theme="light"] .sun-icon { display: none; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }
[data-theme="dark"] .sun-icon { display: block; }

/* Menú móvil oculto por defecto */
.mobile-nav {
  display: none;
}

/* --- MAIN CONTENT --- */
.main-content {
  padding: 40px;
  overflow-y: auto;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

.content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.content-header h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.live-clock {
  font-size: 1.1rem;
  font-weight: 600;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  box-shadow: var(--shadow-sm);
}

/* --- PESTAÑAS (SPA) --- */
.tab-pane {
  display: none;
  animation: fadeIn 0.4s ease;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- COMPONENTES COMUNES: TARJETAS (CARDS) --- */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(800px circle at var(--x, 0px) var(--y, 0px), var(--card-glow), transparent 40%);
  z-index: 1;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.card-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
}

/* --- SECCIÓN DASHBOARD --- */
.timer-section-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

.timer-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 40px 24px;
}

.gradient-border {
  border: 2px solid transparent;
  background: linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
              var(--gradient-primary) border-box;
}

.timer-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.badge {
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
}

.badge.active {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--success);
  animation: pulse-soft 2s infinite;
}

.active-project-label {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timer-display {
  font-size: 4rem;
  font-weight: 800;
  letter-spacing: -2px;
  font-variant-numeric: tabular-nums;
  margin: 16px 0;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 4px 8px rgba(99, 102, 241, 0.2));
}

.timer-controls-group {
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.active-desc-text {
  font-style: italic;
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 12px;
}

/* Tarjetas de Estadísticas */
.stats-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px;
}

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

.icon-today { background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%); }
.icon-week { background: linear-gradient(135deg, #6366f1 0%, #4338ca 100%); }
.icon-month { background: linear-gradient(135deg, #ec4899 0%, #be185d 100%); }

.stat-info h3 {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-info p {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 2px;
}

/* --- SECCIÓN PROYECTOS --- */
.projects-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 24px;
  align-items: start;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.project-item-card {
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: space-between;
  transition: var(--transition);
}

.project-item-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(59, 130, 246, 0.3);
}

.project-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.project-item-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  word-break: break-word;
}

.project-item-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  flex: 1;
}

.project-item-card.archived {
  opacity: 0.6;
}

.project-item-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
  margin-top: 8px;
}

/* --- SECCIÓN REGISTROS (LOGS) & FILTROS --- */
.filter-card {
  margin-bottom: 24px;
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)) auto;
  gap: 16px;
  align-items: flex-end;
}

.filter-actions-group {
  display: flex;
  gap: 8px;
}

/* --- SECCIÓN REPORTES --- */
.reports-header-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.report-filter-bar {
  display: flex;
  gap: 16px;
  align-items: flex-end;
}

.total-hours-card {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.total-hours-display p {
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.total-hours-display h2 {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-top: 4px;
}

.reports-dashboard-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
}

.chart-container {
  position: relative;
  height: 300px;
  width: 100%;
}

/* --- FORMULARIOS E INPUTS --- */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
  width: 100%;
}

.input-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-icon i {
  position: absolute;
  left: 14px;
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  pointer-events: none;
}

.input-with-icon input {
  padding-left: 44px;
}

input[type="text"],
input[type="password"],
input[type="date"],
input[type="time"],
input[type="month"],
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
input[type="month"]:focus,
select:focus,
textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  background-color: var(--bg-secondary);
}

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

/* Toggle Switch */
.toggle-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  position: relative;
}

.toggle-switch input {
  display: none;
}

.slider {
  width: 40px;
  height: 20px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  position: relative;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.slider::before {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--text-secondary);
  top: 2px;
  left: 2px;
  transition: var(--transition);
}

.toggle-switch input:checked + .slider {
  background: var(--gradient-primary);
}

.toggle-switch input:checked + .slider::before {
  transform: translateX(20px);
  background-color: #fff;
}

.toggle-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* --- TABLAS --- */
.table-container {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.table th, .table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.table th {
  font-weight: 600;
  color: var(--text-secondary);
  background-color: rgba(0, 0, 0, 0.05);
}

.table tbody tr {
  transition: var(--transition);
}

.table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

[data-theme="light"] .table tbody tr:hover {
  background-color: rgba(0, 0, 0, 0.01);
}

.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

/* --- BOTONES --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  user-select: none;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}
.btn-primary:hover {
  box-shadow: 0 6px 18px rgba(59, 130, 246, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background-color: var(--bg-secondary);
}

.btn-success {
  background: var(--gradient-success);
  color: #fff;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}
.btn-success:hover {
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.35);
  transform: translateY(-1px);
}

.btn-danger {
  background: var(--gradient-danger);
  color: #fff;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
  box-shadow: 0 6px 18px rgba(239, 68, 68, 0.35);
  transform: translateY(-1px);
}

/* Botón de acción rápido de icono */
.btn-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background-color: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.btn-icon:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-icon.btn-icon-danger:hover {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

/* Animación de latido para el fichaje */
.btn-pulse {
  position: relative;
}

.btn-pulse::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: inherit;
  top: 0;
  left: 0;
  z-index: -1;
  animation: btn-pulsing 2s infinite;
  opacity: 0.4;
}

@keyframes btn-pulsing {
  0% { transform: scale(1); opacity: 0.4; }
  100% { transform: scale(1.08, 1.15); opacity: 0; }
}

@keyframes pulse-soft {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* --- VENTANAS MODALES --- */
.modal-overlay, .login-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.3s ease;
}

.modal-card, .login-card {
  width: 100%;
  max-width: 500px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  position: relative;
  animation: scaleIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes scaleIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

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

.btn-close-modal {
  background: transparent;
  border: none;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition);
}

.btn-close-modal:hover {
  color: var(--text-primary);
}

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

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

/* --- OVERLAY DE LOGIN --- */
.login-overlay {
  z-index: 2000;
  background-color: var(--bg-primary);
}

.login-card {
  max-width: 400px;
  text-align: center;
}

.logo-icon-large {
  width: 64px;
  height: 64px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin-bottom: 20px;
  box-shadow: 0 12px 24px rgba(59, 130, 246, 0.4);
}

.login-header h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.login-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.error-msg {
  color: var(--danger);
  font-size: 0.85rem;
  font-weight: 500;
  margin: -8px 0 16px 0;
  text-align: left;
}

.hidden {
  display: none !important;
}

/* --- MEDIA QUERIES (RESPONSIVE) --- */
@media (max-width: 900px) {
  .app-layout {
    grid-template-columns: 1fr;
    padding-bottom: 70px; /* Espacio para bottom nav */
  }

  .sidebar {
    display: none;
  }

  .mobile-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 65px;
    background-color: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--border-color);
    z-index: 500;
    justify-content: space-around;
    align-items: center;
  }

  .mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    border: none;
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
  }

  .mobile-nav-item.active {
    color: var(--primary);
    background-color: rgba(59, 130, 246, 0.1);
  }

  .main-content {
    padding: 24px 16px;
  }

  .timer-section-grid {
    grid-template-columns: 1fr;
  }

  .projects-layout {
    grid-template-columns: 1fr;
  }

  .reports-header-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  
  .filter-grid {
    grid-template-columns: 1fr;
  }
  
  .filter-actions-group {
    width: 100%;
  }
  .filter-actions-group button {
    flex: 1;
  }

  .timer-display {
    font-size: 3rem;
  }
}