/* ============================================
   ATTENDANCE APP - PREMIUM DARK THEME
   ============================================ */

:root {
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #252542;
  --bg-card: #16213e;

  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #6c6c7c;

  --accent-primary: #4f46e5;
  --accent-secondary: #6366f1;
  --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.15);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.15);

  --checkin-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --checkout-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);

  --border-color: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

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

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

html,
body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

#app {
  height: 100%;
  display: flex;
  flex-direction: column;
}

/* ============================================
   SCREENS
   ============================================ */

.screen {
  display: none;
  height: 100%;
}

.screen.active {
  display: flex;
  flex-direction: column;
}

/* ============================================
   LOGIN SCREEN
   ============================================ */

#login-screen {
  background: var(--bg-primary);
  background-image:
    radial-gradient(ellipse at top, rgba(79, 70, 229, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
  justify-content: center;
  align-items: center;
  padding: 24px;
}

.login-container {
  width: 100%;
  max-width: 380px;
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.logo {
  text-align: center;
  margin-bottom: 48px;
}

.logo-icon {
  font-size: 64px;
  margin-bottom: 16px;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.05);
  }
}

.logo h1 {
  font-size: 32px;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.logo .subtitle {
  color: var(--text-secondary);
  font-size: 14px;
}

#login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.input-group {
  position: relative;
}

.input-group input {
  width: 100%;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 16px;
  font-family: inherit;
  transition: var(--transition);
}

.input-group input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.2);
}

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

.login-hint {
  margin-top: 24px;
  text-align: center;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  font-size: 13px;
  color: var(--text-secondary);
}

.login-hint strong {
  color: var(--accent-secondary);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.5);
  transform: translateY(-1px);
}

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

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
  width: 100%;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 12px;
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

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

/* ============================================
   MAIN SCREEN LAYOUT
   ============================================ */

#main-screen {
  background: var(--bg-primary);
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar {
  width: 44px;
  height: 44px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
}

.user-details {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-weight: 600;
  font-size: 15px;
}

.user-role {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: capitalize;
}

/* ============================================
   TAB NAVIGATION
   ============================================ */

.tab-nav {
  display: flex;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab-nav::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  flex: 1;
  min-width: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn:hover {
  color: var(--text-secondary);
}

.tab-btn.active {
  color: var(--accent-secondary);
  border-bottom-color: var(--accent-primary);
}

.tab-btn svg {
  opacity: 0.7;
}

.tab-btn.active svg {
  opacity: 1;
}

.tab-btn.manager-only {
  display: none;
}

body.is-manager .tab-btn.manager-only {
  display: flex;
}

/* ============================================
   TAB CONTENT
   ============================================ */

.tab-content {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.tab-pane {
  display: none;
  height: 100%;
  overflow-y: auto;
  padding: 20px;
  animation: fadeIn 0.3s ease-out;
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

/* ============================================
   CHECK-IN TAB
   ============================================ */

#tab-checkin {
  display: none;
  flex-direction: column;
  align-items: center;
  padding-top: 40px;
}

#tab-checkin.active {
  display: flex;
}

.time-display {
  text-align: center;
  margin-bottom: 32px;
}

.current-time {
  font-size: 56px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.current-date {
  font-size: 16px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.checkin-status {
  margin-bottom: 32px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
}

.status-badge.pending {
  background: var(--warning-bg);
  color: var(--warning);
}

.status-badge.checked-in {
  background: var(--success-bg);
  color: var(--success);
}

.status-badge.completed {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-secondary);
}

.checkin-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
}

.btn-checkin,
.btn-checkout {
  width: 140px;
  height: 140px;
  flex-direction: column;
  gap: 12px;
  border-radius: var(--radius-xl);
  font-size: 14px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-checkin {
  background: var(--checkin-gradient);
  color: white;
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.3);
}

.btn-checkin:hover:not(:disabled) {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(16, 185, 129, 0.4);
}

.btn-checkout {
  background: var(--checkout-gradient);
  color: white;
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.3);
}

.btn-checkout:hover:not(:disabled) {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(245, 158, 11, 0.4);
}

.btn-checkin:disabled,
.btn-checkout:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.today-record {
  width: 100%;
  max-width: 320px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-md);
}

.today-record h3 {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.record-times {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.time-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.time-item .label {
  color: var(--text-secondary);
  font-size: 14px;
}

.time-item .value {
  font-weight: 600;
  font-size: 16px;
  font-variant-numeric: tabular-nums;
}

/* ============================================
   FILTER BAR
   ============================================ */

.filter-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.select-input {
  padding: 10px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
}

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

/* ============================================
   RECORDS LIST
   ============================================ */

.records-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.record-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.record-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.record-date {
  font-weight: 600;
  font-size: 15px;
}

.record-employee {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.record-status {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.record-status.pending {
  background: var(--warning-bg);
  color: var(--warning);
}

.record-status.approved {
  background: var(--success-bg);
  color: var(--success);
}

.record-status.rejected {
  background: var(--danger-bg);
  color: var(--danger);
}

.record-times-row {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.record-times-row span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.record-times-row strong {
  color: var(--text-primary);
  font-weight: 600;
}

.record-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}

.btn-approve {
  background: var(--success);
  color: white;
  flex: 1;
}

.btn-reject {
  background: var(--danger);
  color: white;
  flex: 1;
}

/* ============================================
   SUMMARY TABLE
   ============================================ */

.summary-table {
  overflow-x: auto;
}

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

.summary-table th,
.summary-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.summary-table th {
  background: var(--bg-secondary);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

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

.summary-table .hours {
  font-weight: 700;
  color: var(--accent-secondary);
}

/* ============================================
   TOAST NOTIFICATION
   ============================================ */

.toast {
  position: fixed;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  padding: 14px 24px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  font-weight: 500;
  z-index: 1000;
  transition: bottom 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border-left: 4px solid var(--accent-primary);
}

.toast.show {
  bottom: 24px;
}

.toast.success {
  border-left-color: var(--success);
}

.toast.error {
  border-left-color: var(--danger);
}

/* ============================================
   LOADING
   ============================================ */

.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state svg {
  width: 64px;
  height: 64px;
  opacity: 0.5;
  margin-bottom: 16px;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 480px) {
  .current-time {
    font-size: 44px;
  }

  .btn-checkin,
  .btn-checkout {
    width: 120px;
    height: 120px;
  }

  .record-times-row {
    flex-direction: column;
    gap: 8px;
  }
}

/* ============================================
   SAFE AREA (Notch support)
   ============================================ */

@supports (padding-top: env(safe-area-inset-top)) {
  .app-header {
    padding-top: calc(16px + env(safe-area-inset-top));
  }

  .tab-content {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* ============================================
   SETTINGS TAB
   ============================================ */

.settings-container {
  max-width: 400px;
  margin: 0 auto;
  padding: 20px;
}

.settings-form .input-group {
  margin-bottom: 16px;
}

.settings-form .input-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.settings-form .input-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
}

.settings-form .input-group input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}
/* ============================================
   MODALS
   ============================================ */

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(4px);
}

.modal.active {
  display: flex;
  animation: fadeIn 0.2s ease-out;
}

.modal-content {
  background: var(--bg-card);
  width: 100%;
  max-width: 400px;
  padding: 24px;
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  border: 1px solid var(--border-color);
}

.modal h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.modal p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 20px;
}

.modal-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  margin-bottom: 24px;
  font-size: 16px;
}

.modal-input:focus {
  outline: none;
  border-color: var(--accent-primary);
}

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

.table-responsive {
    overflow-x: auto;
    margin-top: 16px;
}

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

.data-table th, .data-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 600;
}