/* ==========================================================================
   Central Greenhouse System - Pangda Modern Deep Space Theme & CSS Variables
   ========================================================================== */

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

/* ====== Day/Night Theme Palette (Pangda Theme System) ====== */

/* Night Mode (Default) — Deep Space Slate & Neon Teal/Emerald Accents */
:root, .theme-night {
  --bg-page: #060913;
  --bg-card: #0c1220;
  --bg-card-hover: #131c30;
  --bg-section: #0c1220;
  --bg-input: #141c2e;
  --bg-subtle: rgba(20, 28, 46, 0.7);
  --bg-control: #141c2e;

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --text-value: #ffffff;

  --border-primary: #1e293b;
  --border-subtle: rgba(30, 41, 59, 0.6);
  --border-card: #131b2e;
  --border-card-hover: rgba(20, 184, 166, 0.5);

  --header-from: #090e1a;
  --header-to: #131d35;
  --header-border: #1e293b;

  --accent-emerald: #10b981;
  --accent-teal: #14b8a6;
  --accent-cyan: #06b6d4;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-purple: #8b5cf6;

  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-card-hover: 0 20px 45px rgba(0, 0, 0, 0.55), 0 0 20px rgba(20, 184, 166, 0.15);
}

/* Day Mode (Light) — Pangda Slate Day Theme */
.theme-day {
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-section: #ffffff;
  --bg-input: #f8fafc;
  --bg-subtle: rgba(248, 250, 252, 0.8);
  --bg-control: #f1f5f9;

  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-value: #0f172a;

  --border-primary: #e2e8f0;
  --border-subtle: rgba(226, 232, 240, 0.8);
  --border-card: #e2e8f0;
  --border-card-hover: rgba(16, 185, 129, 0.4);

  --header-from: #047857;
  --header-to: #0d9488;
  --header-border: #065f46;

  --accent-emerald: #059669;
  --accent-teal: #0d9488;
  --accent-cyan: #0891b2;
  --accent-amber: #d97706;
  --accent-rose: #e11d48;
  --accent-purple: #7c3aed;

  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.05);
  --shadow-card-hover: 0 12px 30px rgba(0, 0, 0, 0.1), 0 0 15px rgba(13, 148, 136, 0.15);
}

/* ====== Global Reset & Base Styles ====== */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', 'Noto Sans Thai', sans-serif;
}

body {
  background-color: var(--bg-page);
  color: var(--text-primary);
  min-height: 100vh;
  transition: background-color 0.4s ease, color 0.4s ease;
  padding-bottom: 50px;
}

.theme-night body {
  background-image: 
    radial-gradient(at 0% 0%, rgba(20, 184, 166, 0.08) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(6, 182, 212, 0.08) 0px, transparent 50%),
    radial-gradient(at 50% 100%, rgba(139, 92, 246, 0.06) 0px, transparent 50%);
  background-attachment: fixed;
}

h1, h2, h3, h4, .font-heading {
  font-family: 'Outfit', 'Noto Sans Thai', sans-serif;
}

/* ====== Pangda Glass Panel Container ====== */
.glass-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), 
              box-shadow 0.3s ease, 
              border-color 0.3s ease,
              background-color 0.3s ease;
}

.card-dimensional:hover {
  transform: translateY(-5px) scale(1.008);
  border-color: var(--border-card-hover);
  box-shadow: var(--shadow-card-hover);
  background-color: var(--bg-card-hover);
}

/* ====== Header Navigation Bar ====== */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(135deg, var(--header-from), var(--header-to));
  border-bottom: 1px solid var(--header-border);
  padding: 16px 32px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  transition: background 0.4s ease, border-color 0.4s ease;
}

.nav-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent-emerald), var(--accent-teal));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  box-shadow: 0 0 20px rgba(20, 184, 166, 0.4);
}

.logo-title h1 {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
}

.logo-title p {
  font-size: 12px;
  color: var(--text-secondary);
}

.theme-day .logo-title p {
  color: rgba(255, 255, 255, 0.85);
}

/* Connection Badges & Theme Switcher */
.status-badges {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  position: relative;
  background-color: #64748b;
}

.pulse-dot.online {
  background-color: #10b981;
  box-shadow: 0 0 10px #10b981;
}

.pulse-dot.online::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  border-radius: 50%;
  background-color: #10b981;
  animation: pulse-ring 1.5s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.8; }
  100% { transform: scale(2.4); opacity: 0; }
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

/* ====== Main Layout Grid Container ====== */
.main-container {
  max-width: 1440px;
  margin: 24px auto;
  padding: 0 32px;
}

/* ====== Control & Filter Toolbar ====== */
.controls-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-tabs {
  display: flex;
  gap: 6px;
  background: var(--bg-input);
  padding: 4px;
  border-radius: 12px;
  border: 1px solid var(--border-primary);
}

.tab-btn {
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.tab-btn.active {
  background: linear-gradient(135deg, var(--accent-emerald), var(--accent-teal));
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(20, 184, 166, 0.3);
}

.stb-select-wrapper {
  position: relative;
}

.stb-select {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
  padding: 8px 32px 8px 14px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  appearance: none;
  transition: all 0.2s ease;
}

.stb-select:focus {
  border-color: var(--accent-teal);
  box-shadow: 0 0 10px rgba(20, 184, 166, 0.3);
}

.stb-select-icon {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-muted);
  font-size: 11px;
}

.time-selector {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* Custom Date Range Picker Container & Input */
.custom-date-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
  position: relative;
}

.date-picker-input {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
  padding: 7px 12px 7px 32px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 500;
  outline: none;
  min-width: 210px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.date-picker-input:focus, .date-picker-input.active {
  border-color: var(--accent-teal);
  box-shadow: 0 0 10px rgba(20, 184, 166, 0.25);
}

.date-picker-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent-teal);
  font-size: 12px;
  pointer-events: none;
}

.btn-apply-date {
  background: linear-gradient(135deg, var(--accent-emerald), var(--accent-teal));
  color: #ffffff;
  border: none;
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  box-shadow: 0 2px 10px rgba(20, 184, 166, 0.3);
  transition: all 0.2s ease;
}

.btn-apply-date:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-clear-date {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-clear-date:hover {
  background: rgba(244, 63, 94, 0.3);
}

/* ====== Flatpickr Calendar Popup Custom OK Button ====== */
.flatpickr-confirm-wrapper {
  padding: 10px 12px;
  border-top: 1px solid var(--border-primary);
  background: var(--bg-card);
  text-align: center;
}

.flatpickr-confirm-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--accent-emerald), var(--accent-teal));
  color: #ffffff;
  border: none;
  padding: 9px 16px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: 0 4px 14px rgba(20, 184, 166, 0.35);
  transition: all 0.2s ease;
}

.flatpickr-confirm-btn:hover {
  opacity: 0.95;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(20, 184, 166, 0.45);
}

.hidden {
  display: none !important;
}

/* ====== KPI Summary Cards Grid ====== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.kpi-card.temp::before { background: var(--accent-rose); }
.kpi-card.hum::before { background: var(--accent-cyan); }
.kpi-card.light::before { background: var(--accent-amber); }
.kpi-card.vpd::before { background: var(--accent-purple); }
.kpi-card.soil::before { background: var(--accent-emerald); }

.kpi-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 10px;
}

.kpi-icon {
  font-size: 18px;
}

.kpi-value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-value);
}

.kpi-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ====== Live Telemetry Zone Cards ====== */
.section-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
}

.zone-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.zone-card {
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.zone-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-primary);
}

.zone-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.site-badge {
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 6px;
  font-weight: 600;
  text-transform: uppercase;
}

.site-badge.mh { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); border: 1px solid rgba(16, 185, 129, 0.3); }
.site-badge.pd { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); border: 1px solid rgba(6, 182, 212, 0.3); }
.site-badge.msm { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); border: 1px solid rgba(245, 158, 11, 0.3); }

.metrics-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.metric-item {
  background: var(--bg-input);
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
}

.metric-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.metric-val {
  font-size: 18px;
  font-weight: 700;
}

.soil-bars {
  background: var(--bg-input);
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
}

.soil-bar-item {
  margin-bottom: 8px;
}
.soil-bar-item:last-child { margin-bottom: 0; }

.soil-bar-info {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.bar-bg {
  height: 6px;
  background: var(--border-primary);
  border-radius: 3px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-emerald), var(--accent-teal));
  border-radius: 3px;
  transition: width 0.5s ease;
}

/* ====== Charts Grid Section ====== */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

@media (max-width: 600px) {
  .charts-grid { grid-template-columns: 1fr; }
}

.chart-panel {
  padding: 24px;
  height: 380px;
  position: relative;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.chart-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

/* ====== Logs Table Panel ====== */
.table-panel {
  padding: 24px;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

th {
  padding: 12px 16px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-primary);
  font-weight: 600;
}

td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

tr:hover td {
  background: var(--bg-card-hover);
}

.btn-export {
  background: linear-gradient(135deg, var(--accent-emerald), var(--accent-teal));
  color: #ffffff;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(20, 184, 166, 0.3);
  transition: all 0.2s ease;
}

.btn-export:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ====== Animations & Entrance ====== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* ====== Custom Scrollbar ====== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-page); }
::-webkit-scrollbar-thumb { background: var(--border-primary); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ====== Footer ====== */
footer {
  text-align: center;
  padding: 24px 0 0 0;
  border-top: 1px solid var(--border-primary);
  color: var(--text-muted);
  font-size: 12px;
  max-width: 1440px;
  margin: 32px auto 0 auto;
}