/* =========================================================
   MODERN & MINIMALIST IoT DASHBOARD STYLES
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;

  /* Accent Colors */
  --temp-color: #f97316;
  --temp-bg: #fff7ed;
  --temp-border: #ffedd5;

  --hum-color: #0284c7;
  --hum-bg: #f0f9ff;
  --hum-border: #e0f2fe;

  --success-color: #10b981;
  --success-bg: #ecfdf5;
  --success-border: #d1fae5;

  --warning-color: #f59e0b;
  --danger-color: #ef4444;

  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -4px rgba(0, 0, 0, 0.02);
  --shadow-hover: 0 14px 24px -4px rgba(0, 0, 0, 0.08);

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

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem 1.25rem;
}

/* ================= HEADER ================= */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  color: #fff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-subtitle {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.live-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--success-color);
  position: relative;
}

.pulse-dot::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--success-color);
  opacity: 0.6;
  animation: pulse-ring 1.8s cubic-bezier(0.24, 0, 0.38, 1) infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.6); opacity: 0.8; }
  100% { transform: scale(2.2); opacity: 0; }
}

.btn-refresh {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition-fast);
}

.btn-refresh:hover {
  background: #f1f5f9;
  border-color: var(--text-muted);
}

.btn-refresh i.spinning {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  100% { transform: rotate(360deg); }
}

/* ================= HERO METRIC CARDS ================= */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-hover);
  border-color: #cbd5e1;
  transform: translateY(-2px);
}

.metric-card-temp {
  border-top: 4px solid var(--temp-color);
}

.metric-card-hum {
  border-top: 4px solid var(--hum-color);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.card-icon.temp {
  background-color: var(--temp-bg);
  color: var(--temp-color);
}

.card-icon.hum {
  background-color: var(--hum-bg);
  color: var(--hum-color);
}

.card-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-status {
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.badge-normal {
  background-color: var(--success-bg);
  color: var(--success-color);
  border: 1px solid var(--success-border);
}

.badge-warm {
  background-color: #fef3c7;
  color: #d97706;
  border: 1px solid #fde68a;
}

.badge-hot {
  background-color: #fee2e2;
  color: #dc2626;
  border: 1px solid #fecaca;
}

.badge-dry {
  background-color: #ffedd5;
  color: #ea580c;
  border: 1px solid #fed7aa;
}

.badge-moist {
  background-color: #e0f2fe;
  color: #0284c7;
  border: 1px solid #bae6fd;
}

.metric-value-wrapper {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  margin-bottom: 0.5rem;
}

.metric-value {
  font-size: 3.25rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}

.metric-unit {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.metric-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
  padding-top: 0.85rem;
  margin-top: 0.85rem;
}

/* ================= STATS SUMMARY PILLS ================= */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.stat-pill {
  background: var(--bg-main);
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid var(--border-light);
}

.stat-pill-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.15rem;
}

.stat-pill-val {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ================= CHART & LOGS SECTION ================= */
.section-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
}

.section-title i {
  color: var(--primary-color);
}

.main-content-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (max-width: 968px) {
  .main-content-grid {
    grid-template-columns: 1fr;
  }
}

.chart-card {
  display: flex;
  flex-direction: column;
}

.chart-container {
  position: relative;
  width: 100%;
  height: 320px;
}

/* ================= LOG TABLE ================= */
.table-card {
  display: flex;
  flex-direction: column;
}

.table-wrapper {
  overflow-x: auto;
  margin-top: 0.5rem;
}

table.log-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  text-align: left;
}

table.log-table th {
  background-color: var(--bg-main);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

table.log-table td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
  white-space: nowrap;
}

table.log-table tr:hover td {
  background-color: #f8fafc;
}

.badge-sm {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 600;
}

/* ================= FOOTER ================= */
.footer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.footer a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
}

.footer a:hover {
  color: var(--primary-color);
}

/* Empty State / Loading State */
.empty-state {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  opacity: 0.5;
}