/* 
  Victron Energy VRM Telemetry Monitor - Modern Design System
  Style tokens, Glassmorphism, Responsive Table, Badges & Animations
*/

:root {
  --bg-primary: #0a0d14;
  --bg-surface: #101622;
  --bg-card: rgba(20, 27, 43, 0.7);
  --bg-card-hover: rgba(28, 38, 60, 0.85);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(0, 229, 255, 0.25);
  
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --cyan-primary: #00e5ff;
  --cyan-glow: rgba(0, 229, 255, 0.25);
  --emerald-green: #10b981;
  --emerald-glow: rgba(16, 185, 129, 0.25);
  --amber-orange: #f59e0b;
  --rose-red: #ef4444;
  --rose-glow: rgba(239, 68, 68, 0.25);
  --purple-accent: #a855f7;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(0, 229, 255, 0.07) 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(168, 85, 247, 0.05) 0%, transparent 40%);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px 20px;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}

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

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #00b4d8 0%, #0077b6 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
}

.brand-info h1 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}

.brand-info p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 20px;
  letter-spacing: 0.03em;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 10px #10b981;
  animation: pulse-ring 2s infinite ease-out;
}

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
  100% { transform: scale(0.9); opacity: 1; }
}

.btn-logout {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-logout:hover {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.3);
}

/* Stat Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
}

.stat-card.c-total::after { background: #38bdf8; }
.stat-card.c-present::after { background: var(--emerald-green); }
.stat-card.c-lost::after { background: var(--rose-red); }
.stat-card.c-offline::after { background: var(--text-muted); }
.stat-card.c-three::after { background: var(--purple-accent); }

.stat-card:hover {
  transform: translateY(-2px);
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

.stat-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-value {
  font-size: 1.85rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.stat-sub {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* Toolbar & Filters */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 18px;
}

.search-box {
  position: relative;
  min-width: 280px;
  flex: 1;
  max-width: 420px;
}

.search-input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px 10px 38px;
  color: var(--text-primary);
  font-size: 0.88rem;
  outline: none;
  transition: var(--transition-fast);
}

.search-input:focus {
  border-color: var(--cyan-primary);
  box-shadow: 0 0 0 3px var(--cyan-glow);
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}

.filter-tabs {
  display: flex;
  background: rgba(16, 22, 34, 0.7);
  border: 1px solid var(--border-color);
  padding: 4px;
  border-radius: var(--radius-md);
  gap: 4px;
  flex-wrap: wrap;
}

.filter-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover {
  color: #fff;
}

.filter-btn.active {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-weight: 600;
}

/* Table Card */
.table-container {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

table.telemetry-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

table.telemetry-table th {
  background: rgba(16, 22, 34, 0.9);
  padding: 14px 18px;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

table.telemetry-table td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  vertical-align: middle;
  color: var(--text-primary);
  transition: background var(--transition-fast);
}

table.telemetry-table tbody tr:hover td {
  background: rgba(255, 255, 255, 0.025);
}

.site-title {
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.portal-code {
  font-family: 'JetBrains Mono', monospace, Consolas;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.04);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  color: #cbd5e1;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.badge-online {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-offline {
  background: rgba(148, 163, 184, 0.1);
  color: #94a3b8;
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.badge-present {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.35);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.15);
}

.badge-lost {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.35);
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.15);
}

.badge-unknown {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.badge-phase {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
}

.badge-phase-1 {
  background: rgba(56, 189, 248, 0.1);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.badge-phase-3 {
  background: rgba(168, 85, 247, 0.12);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.25);
}

/* Voltages */
.voltage-cell {
  font-family: 'JetBrains Mono', monospace, Consolas;
  font-weight: 600;
}

.v-normal {
  color: #34d399;
}

.v-warning {
  color: #fbbf24;
}

.v-zero {
  color: #f87171;
}

.v-none {
  color: var(--text-muted);
  font-weight: 400;
}

.time-ago {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Grid Change Indicator */
.grid-change {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.82rem;
  white-space: nowrap;
}

.gc-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 6px;
  letter-spacing: 0.02em;
}

.gc-restored .gc-badge {
  background: rgba(16, 185, 129, 0.16);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.35);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.15);
}

.gc-lost .gc-badge {
  background: rgba(239, 68, 68, 0.16);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.35);
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.15);
}

.gc-time {
  font-family: 'JetBrains Mono', monospace, Consolas;
  color: #e2e8f0;
  font-weight: 500;
  font-size: 0.8rem;
}

.gc-ago {
  color: var(--text-muted);
  font-size: 0.76rem;
}


/* Footer */
.footer {
  margin-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* Login Page Styles */
.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5);
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #00b4d8, #a855f7);
}

.login-header {
  text-align: center;
  margin-bottom: 28px;
}

.login-header .brand-icon {
  margin: 0 auto 16px auto;
  width: 52px;
  height: 52px;
  font-size: 24px;
}

.login-header h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.login-header p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  background: rgba(16, 22, 34, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: #fff;
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-input:focus {
  border-color: var(--cyan-primary);
  box-shadow: 0 0 0 3px var(--cyan-glow);
}

.btn-primary {
  width: 100%;
  background: linear-gradient(135deg, #00b4d8 0%, #0077b6 100%);
  border: none;
  color: #fff;
  padding: 12px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 180, 216, 0.35);
  transition: var(--transition-fast);
  margin-top: 10px;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 180, 216, 0.45);
}

.btn-primary:active {
  transform: translateY(1px);
}

.login-error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  margin-bottom: 16px;
  display: none;
}

/* Shake animation on error */
.shake {
  animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-3px, 0, 0); }
  40%, 60% { transform: translate3d(3px, 0, 0); }
}

/* Telegram Settings Button in Header */
.btn-settings {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-settings:hover {
  background: rgba(0, 229, 255, 0.12);
  border-color: var(--border-highlight);
  color: #fff;
  transform: translateY(-1px);
}

/* Outage Alert Toggle Switch */
.cell-notify {
  width: 70px;
  text-align: center;
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 38px;
  height: 22px;
  vertical-align: middle;
  cursor: pointer;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 22px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: #94a3b8;
  transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 50%;
}

.toggle-switch input:checked + .toggle-slider {
  background-color: #059669;
  border-color: #10b981;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.35);
}

.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(16px);
  background-color: #ffffff;
}

/* Modal Backdrop & Dialog */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 7, 13, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-dialog {
  background: #101622;
  border: 1px solid rgba(0, 229, 255, 0.25);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 20px rgba(0, 229, 255, 0.15);
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: 100%;
  animation: modalFadeIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(20, 27, 43, 0.5);
}

.modal-title-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.modal-icon {
  font-size: 1.4rem;
}

.modal-header h2 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.modal-close:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.modal-body {
  padding: 24px;
}

.modal-description {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.form-hint {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.modal-footer .btn-primary {
  width: auto;
  margin-top: 0;
  padding: 10px 20px;
}

.settings-alert-box {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-top: 14px;
  line-height: 1.4;
}

.settings-alert-box.alert-success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #34d399;
}

.settings-alert-box.alert-error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #f87171;
}

@media (max-width: 768px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
  }
  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .search-box {
    max-width: 100%;
  }
}