/* Design Variables and Themes */
:root {
  /* Common Brand Colors */
  --primary: #22c55e;
  --primary-hover: #16a34a;
  --secondary: #16a34a;
  --accent: #38bdf8;
  --accent-rgb: 56, 189, 248;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #06b6d4;
  --lime: #84cc16;

  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

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

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-color: #04060d;
  --bg-gradient: radial-gradient(circle at 50% 0%, rgba(34, 197, 94, 0.18) 0%, rgba(56, 189, 248, 0.05) 30%, rgba(4, 6, 13, 0.99) 70%, #010205 100%);
  --grid-overlay: linear-gradient(rgba(255, 255, 255, 0.005) 1px, transparent 1px),
                  linear-gradient(90deg, rgba(255, 255, 255, 0.005) 1px, transparent 1px);
  --grid-size: 32px 32px;
  --card-bg: rgba(13, 18, 35, 0.7);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-shadow: 0 20px 48px 0 rgba(0, 0, 0, 0.6);
  --text-color: #f8fafc;
  --text-muted: #94a3b8;
  --navbar-bg: rgba(4, 6, 13, 0.85);
  --input-bg: rgba(2, 4, 9, 0.85);
  --input-border: rgba(255, 255, 255, 0.15);
  --input-text: #f8fafc;
  --table-border: rgba(255, 255, 255, 0.06);
  --table-hover: rgba(255, 255, 255, 0.02);
  --table-header-bg: rgba(255, 255, 255, 0.02);
  --kbd-bg: rgba(255, 255, 255, 0.1);
  --glass-glow: 0 0 30px rgba(34, 197, 94, 0.12);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-color: #f8fafc;
  --bg-gradient: radial-gradient(circle at 50% 0%, rgba(34, 197, 94, 0.08) 0%, rgba(248, 250, 252, 0.95) 70%, #f1f5f9 100%);
  --grid-overlay: linear-gradient(rgba(34, 197, 94, 0.015) 1px, transparent 1px),
                  linear-gradient(90deg, rgba(34, 197, 94, 0.015) 1px, transparent 1px);
  --grid-size: 32px 32px;
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-border: rgba(15, 23, 42, 0.08);
  --card-shadow: 0 16px 36px 0 rgba(148, 163, 184, 0.12);
  --text-color: #0f172a;
  --text-muted: #64748b;
  --navbar-bg: rgba(255, 255, 255, 0.85);
  --input-bg: rgba(255, 255, 255, 0.95);
  --input-border: rgba(15, 23, 42, 0.12);
  --input-text: #0f172a;
  --table-border: rgba(15, 23, 42, 0.06);
  --table-hover: rgba(0, 0, 0, 0.015);
  --table-header-bg: rgba(0, 0, 0, 0.01);
  --kbd-bg: rgba(15, 23, 42, 0.05);
  --glass-glow: 0 0 25px rgba(34, 197, 94, 0.04);
}

/* Base resets & styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-color);
  background-image: var(--bg-gradient), var(--grid-overlay);
  background-size: 100% 100%, var(--grid-size);
  background-attachment: fixed;
  color: var(--text-color);
  min-height: 100vh;
  line-height: 1.6;
  transition: background 0.5s ease, color 0.3s ease;
  overflow-x: hidden;
}

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

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Sticky Navbar styling */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navbar-bg);
  border-bottom: 1px solid var(--card-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition);
}

.navbar-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.85rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.logo-icon {
  font-size: 1.8rem;
  animation: leafPulse 3s infinite ease-in-out;
}

.highlight {
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 0.25rem 0;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--text-color);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* General Buttons styling */
.icon-btn {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text-color);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  font-size: 1.1rem;
}

.icon-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
}

.icon-btn-small {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  font-size: 0.9rem;
}

.icon-btn-small:hover {
  color: var(--text-color);
  border-color: var(--text-color);
  background: rgba(255, 255, 255, 0.05);
}

.btn {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.primary-btn {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(34, 197, 94, 0.3);
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.4);
  filter: brightness(1.1);
}

.primary-btn:active {
  transform: translateY(0);
}

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

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--text-muted);
}

.btn-large {
  width: 100%;
  padding: 1rem;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
}

/* App Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
}

/* Hero Section style */
.hero {
  text-align: center;
  padding: 4rem 0 3rem 0;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.4rem 1rem;
  border-radius: 30px;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  font-weight: 800;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  font-weight: 400;
  max-width: 600px;
  margin: 0 auto;
}

/* Dashboard Columns Structure */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1.2fr 1.8fr;
  gap: 2rem;
  margin-top: 1rem;
}

.dashboard-col {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Glassmorphism Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  border-color: rgba(34, 197, 94, 0.25);
  box-shadow: var(--glass-glow), var(--card-shadow);
}

.card-header {
  padding: 1.5rem 1.5rem 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--card-border);
}

.card-header h2 {
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.card-body {
  padding: 1.5rem;
}

/* Inputs and Forms */
.input-wrapper {
  margin-bottom: 1.25rem;
}

textarea {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--input-text);
  border-radius: 12px;
  padding: 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  resize: vertical;
  transition: var(--transition);
  outline: none;
}

textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

.selector-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.selector-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.selector-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.select-wrapper {
  position: relative;
}

select {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--input-text);
  border-radius: 8px;
  padding: 0.65rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transition: var(--transition);
}

select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 12px rgba(34, 197, 94, 0.2);
}

select option {
  background-color: var(--bg-color);
  color: var(--text-color);
}

.select-wrapper::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  font-size: 0.75rem;
}

.keyboard-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.keyboard-hint kbd {
  background: var(--kbd-bg);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-family: inherit;
  font-weight: 600;
}

/* Spinner and Loaders */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s linear infinite;
}

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

/* AI Response Viewer styling */
.hidden-element {
  display: none !important;
}

.response-stats-badge {
  background: var(--card-border);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
}

.response-content {
  font-size: 0.95rem;
  line-height: 1.7;
  max-height: 350px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.response-content p {
  margin-bottom: 1rem;
}

.response-content code {
  background: rgba(0, 0, 0, 0.2);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.85rem;
}

/* Greener Alternative Section */
.warning-border {
  border: 1px dashed rgba(245, 158, 11, 0.4) !important;
}

.warning-border:hover {
  border-color: var(--warning) !important;
}

.icon-accent {
  font-size: 1.3rem;
}

.savings-badge {
  background: rgba(34, 197, 94, 0.15);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
}

.alternative-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

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

.saving-item {
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.1);
  border-radius: 10px;
  padding: 0.8rem;
  text-align: center;
  transition: transform 0.2s ease;
}

.saving-item:hover {
  transform: translateY(-2px);
  background: rgba(34, 197, 94, 0.12);
}

.saving-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.saving-value {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
}

/* Environmental Dashboard Metrics */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.metric-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.1rem;
  transition: var(--transition);
}

.metric-card:hover {
  transform: translateY(-3px);
  border-color: var(--text-muted);
}

.metric-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.metric-icon.energy { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.metric-icon.carbon { background: rgba(148, 163, 184, 0.15); color: var(--text-muted); }
.metric-icon.water { background: rgba(56, 189, 248, 0.15); color: var(--accent); }
.metric-icon.cost { background: rgba(34, 197, 94, 0.15); color: var(--primary); }
.metric-icon.score { background: rgba(132, 204, 22, 0.15); color: var(--lime); }

.metric-info h3 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.2rem;
  letter-spacing: 0.02em;
}

.metric-value-container {
  display: flex;
  align-items: baseline;
  gap: 0.15rem;
}

.counter {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
}

.unit {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Circular Eco Score Gauge styling */
.gauge-section {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 2rem;
  padding: 1.5rem 1rem;
  background: rgba(255, 255, 255, 0.01);
  border-radius: 12px;
  border: 1px solid var(--card-border);
}

.gauge-container {
  position: relative;
  width: 120px;
  height: 120px;
}

.gauge-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.gauge-bg {
  fill: none;
  stroke: var(--card-border);
  stroke-width: 8;
}

.gauge-fill {
  fill: none;
  stroke: var(--primary);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 314.159;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s cubic-bezier(0.4, 0, 0.2, 1), stroke 0.5s ease;
}

.gauge-text-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

#gauge-percentage {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1;
}

.gauge-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-top: 0.1rem;
}

.gauge-rating {
  flex: 1;
}

.rating-badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  border-radius: 30px;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.rating-badge.green { background: rgba(34, 197, 94, 0.15); color: var(--primary); }
.rating-badge.lime { background: rgba(132, 204, 22, 0.15); color: var(--lime); }
.rating-badge.orange { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.rating-badge.red { background: rgba(239, 68, 68, 0.15); color: var(--danger); }

.rating-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Model Comparison Table styling */
.overflow-x {
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.compare-table th, .compare-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--table-border);
}

.compare-table th {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-muted);
  background: var(--table-header-bg);
}

.compare-table tbody tr {
  transition: var(--transition);
}

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

.highlighted-row {
  background: rgba(34, 197, 94, 0.08) !important;
  font-weight: 600;
}

.highlighted-row:hover {
  background: rgba(34, 197, 94, 0.12) !important;
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
}

.winner-tag {
  background: var(--primary);
  color: white;
  font-size: 0.65rem;
  padding: 0.15rem 0.4rem;
  border-radius: 20px;
  font-weight: 700;
  text-transform: uppercase;
  margin-left: 0.4rem;
}

.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-info { color: var(--accent); }
.text-success { color: var(--primary); }
.text-secondary { color: var(--text-muted); }

/* Weekly Impact Analytics styling */
.weekly-summary-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--table-border);
  padding-bottom: 1.5rem;
}

.summary-box {
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 0.75rem;
  text-align: center;
}

.box-val {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-color);
}

.box-lbl {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.info-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--card-border);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-weight: 500;
}

.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.chart-wrapper {
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.25rem;
  min-height: 250px;
}

.chart-wrapper h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 1rem;
  text-align: center;
}

/* Prompt History Table styling */
.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

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

.history-table th {
  font-family: var(--font-heading);
  color: var(--text-muted);
  font-weight: 600;
  background: var(--table-header-bg);
}

.history-table td.empty-state {
  text-align: center;
  padding: 2.5rem;
  color: var(--text-muted);
  font-style: italic;
}

.history-prompt-cell {
  max-width: 250px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

.text-danger-hover:hover {
  color: var(--danger) !important;
  border-color: var(--danger) !important;
  background: rgba(239, 68, 68, 0.05);
}

/* API Settings Drawer Panel */
.api-drawer {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--card-shadow);
  animation: slideDown 0.3s ease-out;
}

.api-drawer-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.api-drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.api-drawer-header h3 {
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

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

.drawer-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.input-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.input-with-icon {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.input-with-icon input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--input-text);
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border-radius: 8px;
  outline: none;
  font-family: inherit;
  transition: var(--transition);
}

.input-with-icon input:focus {
  border-color: var(--primary);
}

.drawer-actions {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
}

/* Toast System styling */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 1000;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0.85rem 1.25rem;
  border-radius: 8px;
  color: var(--text-color);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 250px;
  max-width: 350px;
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
  transform: translateX(0);
}

.toast.success { border-left: 4px solid var(--primary); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.info { border-left: 4px solid var(--accent); }
.toast.warning { border-left: 4px solid var(--warning); }

/* Footer styling */
.footer {
  border-top: 1px solid var(--card-border);
  padding: 2.5rem 0;
  margin-top: 5rem;
  text-align: center;
  background: rgba(0, 0, 0, 0.1);
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-tagline {
  font-size: 0.8rem !important;
  font-weight: 500;
}

/* Animations declarations */
@keyframes leafPulse {
  0% { transform: scale(1); filter: brightness(1); }
  50% { transform: scale(1.08); filter: brightness(1.15); }
  100% { transform: scale(1); filter: brightness(1); }
}

@keyframes slideDown {
  from { transform: translateY(-20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.animate-slide-up {
  animation: slideUpEffect 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideUpEffect {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Stagger animations for first load */
.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-title {
    font-size: 2.8rem;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  
  .navbar-container {
    padding: 0.8rem 1.25rem;
  }
  
  .nav-links {
    display: none; /* Hide on mobile to simplify SPA layout */
  }
  
  .container {
    padding: 1.25rem;
  }
  
  .hero {
    padding: 2.5rem 0 1.5rem 0;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .savings-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .weekly-summary-row {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .weekly-summary-row {
    grid-template-columns: 1fr 1fr;
  }
  
  .gauge-section {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }
}

/* ==========================================
   Splash Screen, Onboarding, and Credentials
   ========================================== */

/* Splash Screen styling */
.splash-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #03050b;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.6s;
}

.splash-screen.fade-out {
  opacity: 0;
  visibility: hidden;
}

.splash-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.splash-logo {
  font-size: 5rem;
  animation: leafPulse 2s infinite ease-in-out;
  filter: drop-shadow(0 0 20px rgba(34, 197, 94, 0.4));
}

.splash-title {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: white;
  letter-spacing: -0.04em;
}

.splash-loader {
  width: 120px;
  height: 3px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  margin: 0.5rem 0;
}

.splash-loader::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 50%;
  background: var(--primary);
  border-radius: 4px;
  animation: loadingBar 2s infinite ease-in-out;
}

.splash-tagline {
  font-size: 0.95rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
}

@keyframes loadingBar {
  0% { left: -50%; }
  100% { left: 100%; }
}

/* Onboarding Modal Overlay styling */
.onboarding-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(2, 4, 10, 0.85);
  backdrop-filter: blur(8px);
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: var(--transition);
}

.onboarding-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.onboarding-card {
  width: 480px;
  max-width: 90%;
  background: var(--card-bg) !important;
  border: 1px solid var(--card-border) !important;
  box-shadow: var(--card-shadow) !important;
  border-radius: 24px !important;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
}

.onboarding-slides {
  min-height: 220px;
  display: flex;
  position: relative;
}

.onboarding-slide {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
  animation: fadeInSlide 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  width: 100%;
}

.onboarding-slide.active {
  display: flex;
}

.slide-icon {
  font-size: 3.5rem;
  filter: drop-shadow(0 0 15px rgba(34, 197, 94, 0.3));
  margin-bottom: 0.5rem;
  animation: floatIcon 3s infinite ease-in-out;
}

.onboarding-slide h2 {
  font-size: 1.65rem;
  font-weight: 700;
  font-family: var(--font-heading);
}

.onboarding-slide p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.onboarding-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  border-top: 1px solid var(--card-border);
  padding-top: 1.25rem;
}

.slide-dots {
  display: flex;
  gap: 0.5rem;
}

.slide-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--card-border);
  cursor: pointer;
  transition: var(--transition);
}

.slide-dots .dot.active {
  background: var(--primary);
  transform: scale(1.3);
}

.onboarding-actions {
  display: flex;
  gap: 0.75rem;
}

@keyframes fadeInSlide {
  from { opacity: 0; transform: translateX(12px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes floatIcon {
  0% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
  100% { transform: translateY(0); }
}

/* API Key drawer credentials grid & dots styling */
.api-keys-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 0.5rem;
  margin-bottom: 1.25rem;
}

.key-status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #64748b; /* empty/gray */
  margin-right: 6px;
  vertical-align: middle;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.key-status-dot.active {
  background-color: var(--primary) !important; /* active/green */
  box-shadow: 0 0 10px var(--primary);
}

.chart-single-wrapper {
  margin-top: 1rem;
  width: 100%;
}

@media (max-width: 768px) {
  .api-keys-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}