/* Pivara Design System - ESPEN SCADA */

/* ===== Design Tokens ===== */
:root {
  /* Primary Colors */
  --color-sky: #00A3E0;
  --color-azure: #0066B3;
  --color-navy: #1A1F71;
  --color-deep: #0D1147;

  /* Neutrals */
  --color-background: #FAFBFC;
  --color-surface: #FFFFFF;
  --color-border: #E2E8F0;
  --color-muted: #64748B;
  --color-text: #1E293B;

  /* Status Colors */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;

  /* Shadows */
  --shadow-card: 0 1px 3px rgba(26, 31, 113, 0.08), 0 1px 2px rgba(26, 31, 113, 0.06);
  --shadow-elevated: 0 4px 6px rgba(26, 31, 113, 0.1), 0 2px 4px rgba(26, 31, 113, 0.06);

  /* Spacing */
  --sidebar-width: 240px;
  --header-height: 64px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

/* ===== Base Reset ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.5;
}

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

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 24px;
  min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-deep);
  color: white;
  display: flex;
  flex-direction: column;
  z-index: 100;
}

.sidebar-logo {
  padding: 20px 24px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  border-radius: var(--radius-md);
  margin-bottom: 4px;
  transition: all 0.2s ease;
  font-size: 14px;
  font-weight: 500;
}

.nav-item:hover {
  color: white;
  background: rgba(255, 255, 255, 0.1);
}

.nav-item.active {
  color: white;
  background: var(--color-sky);
}

.nav-item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 16px 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-sky);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
}

.user-name {
  font-size: 14px;
  font-weight: 500;
}

.user-role {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 16px;
  color: rgba(255, 255, 255, 0.7);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s ease;
}

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

/* ===== Header ===== */
.page-header {
  margin-bottom: 24px;
}

.page-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-navy);
}

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

/* ===== Cards ===== */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

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

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-navy);
}

.card-body {
  padding: 20px;
}

/* ===== KPI Cards ===== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

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

.kpi-icon svg {
  width: 24px;
  height: 24px;
}

.kpi-icon.sky {
  background: rgba(0, 163, 224, 0.1);
  color: var(--color-sky);
}

.kpi-icon.success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.kpi-icon.warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
}

.kpi-icon.navy {
  background: rgba(26, 31, 113, 0.1);
  color: var(--color-navy);
}

.kpi-content {
  flex: 1;
  min-width: 0;
}

.kpi-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.2;
}

.kpi-unit {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-muted);
  margin-left: 4px;
}

.kpi-label {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 4px;
}

/* ===== Data Tables ===== */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table thead {
  background: var(--color-background);
}

.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--color-border);
}

.data-table th.text-right {
  text-align: right;
}

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

.data-table td.text-right {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.data-table tbody tr:hover {
  background: var(--color-background);
}

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

/* ===== Status Badges ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
}

.badge-error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  background: var(--color-azure);
  color: white;
}

.btn-primary:hover {
  background: var(--color-navy);
}

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

.btn-secondary:hover {
  background: var(--color-border);
}

.btn-icon {
  padding: 8px;
}

/* ===== Grid Layouts ===== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

@media (max-width: 1200px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .main-content {
    margin-left: 0;
    padding: 16px;
  }

  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }
}

/* ===== Chart Container ===== */
.chart-container {
  width: 100%;
  height: 300px;
}

.chart-container.tall {
  height: 400px;
}

/* ===== Weather Cards ===== */
.weather-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
}

.weather-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 16px;
  text-align: center;
}

.weather-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 8px;
  color: var(--color-sky);
}

.weather-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-navy);
}

.weather-label {
  font-size: 12px;
  color: var(--color-muted);
  margin-top: 4px;
}

/* ===== String Matrix (AJB) ===== */
.string-matrix {
  width: 100%;
  border-collapse: collapse;
}

.string-matrix th,
.string-matrix td {
  padding: 8px 12px;
  text-align: center;
  border: 1px solid var(--color-border);
  font-size: 13px;
}

.string-matrix th {
  background: var(--color-navy);
  color: white;
  font-weight: 600;
}

.string-matrix td.cell-ok {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.string-matrix td.cell-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
}

.string-matrix td.cell-error {
  background: rgba(239, 68, 68, 0.2);
  color: var(--color-error);
  font-weight: 600;
}

/* ===== Tabs ===== */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 20px;
}

.tab {
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-muted);
  background: none;
  border: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.2s ease;
}

.tab:hover {
  color: var(--color-navy);
}

.tab.active {
  color: var(--color-sky);
  border-bottom-color: var(--color-sky);
}

/* ===== Loading & Error States ===== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  color: var(--color-muted);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-sky);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 12px;
}

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

.error-message {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
}

/* ===== Last Updated ===== */
.last-updated {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--color-muted);
}

.last-updated .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2s infinite;
}

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

/* ===== Login Page ===== */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-deep) 0%, var(--color-navy) 100%);
  padding: 20px;
}

.login-card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-elevated);
  width: 100%;
  max-width: 400px;
  padding: 40px;
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-navy);
}

.login-logo p {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: 4px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  transition: all 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-sky);
  box-shadow: 0 0 0 3px rgba(0, 163, 224, 0.1);
}

.form-error {
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-error);
}

/* ===== Utility Classes ===== */
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }

.text-sky { color: var(--color-sky); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }
.text-muted { color: var(--color-muted); }
.text-navy { color: var(--color-navy); }

.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }

.text-center { text-align: center; }
.text-right { text-align: right; }