:root {
  /* Brand - Serious/Original Palette */
  --primary: #0B4860;
  /* Ocean Blue */
  --secondary: #CBB486;
  /* Golden Beige */
  --accent: #5DADE2;
  /* Lighter blue for specialized links/actions if needed, or keep golden */

  /* Base Colors */
  --bg-grad-start: #05374A;
  /* Dark Ocean */
  --bg-grad-end: #021a24;
  /* Darker shade */
  --card-bg: rgba(5, 55, 74, 0.75);
  /* Dark Ocean Glass */
  --card-border: rgba(203, 180, 134, 0.2);
  /* Golden border hint */

  /* Text */
  --text-main: #F4F1ED;
  /* Light Beige */
  --text-muted: #E0DCD7;
  /* Muted Beige */

  /* Status */
  --neg: #E74C3C;
  /* Muted Red */
  --pos: #CBB486;
  /* Use Gold for positive/success to stay on brand */

  /* Components */
  --radius: 12px;
  /* Reduced radius for "serious" look */
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 15px 25px rgba(0, 0, 0, 0.3);
  --glass-blur: blur(10px);

  --input-bg: rgba(0, 0, 0, 0.2);
  --input-border: var(--card-border);
  --input-text: var(--text-main);

  /* Chart Colors (CSS Vars for easy theme switching) */
  --chart-axis: var(--text-muted);
  --chart-pos: var(--secondary);
  --chart-neg: var(--neg);
  --chart-grid: rgba(224, 220, 215, 0.1);
  --chart-band: rgba(203, 180, 134, 0.1);
  --chart-bg: rgba(0, 0, 0, 0.2);

  /* Transitions */
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Light theme overrides */
body[data-theme="light"] {
  /* Use Brand Light Beige as base */
  --bg-grad-start: #F4F1ED;
  /* Light Beige */
  --bg-grad-end: #E0DCD7;
  /* Muted Beige */

  --card-bg: rgba(255, 255, 255, 0.8);
  --card-border: rgba(11, 72, 96, 0.1);
  /* Ocean Blue hint */

  --text-main: #0B4860;
  /* Ocean Blue as main text */
  --text-muted: #6b7c86;

  --input-bg: #FFFFFF;
  --input-border: #CBD5E1;
  --input-text: #0B4860;

  --shadow-sm: 0 4px 6px rgba(11, 72, 96, 0.05);
  --shadow-lg: 0 15px 25px rgba(11, 72, 96, 0.1);

  /* Chart overrides for light mode */
  --chart-axis: #6b7c86;
  --chart-pos: #CBB486;
  /* Always Gold */
  --chart-grid: rgba(11, 72, 96, 0.05);
  --chart-band: rgba(11, 72, 96, 0.05);
  --chart-bg: #FFFFFF;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: linear-gradient(135deg, var(--bg-grad-start), var(--bg-grad-end));
  background-attachment: fixed;
  color: var(--text-main);
  font-family: 'Poppins', sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
  transition: background 0.5s ease;
}

/* Typography */
h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.025em;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--secondary);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
  animation: fadeIn 0.6s var(--ease-out);
}

/* Header */
.page-header {
  margin-bottom: 32px;
  animation: slideDown 0.6s var(--ease-out);
}

.header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.page-header h1 {
  font-size: 32px;
  background: linear-gradient(to right, var(--text-main), var(--text-muted));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

.page-header .subtitle {
  color: var(--text-muted);
  font-weight: 300;
  max-width: 800px;
}

/* Controls */
.controls {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.control {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: var(--glass-blur);
  padding: 8px 16px;
  border-radius: 99px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s;
}

.control:hover {
  transform: translateY(-2px);
}

.control label {
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-muted);
}

/* Grid Layout */
.grid {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 32px;
  align-items: start;
}

/* Inputs Panel */
.inputs .group {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s var(--ease-out), border-color 0.3s;
}

.inputs .group:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.group-title {
  font-size: 18px;
  margin-bottom: 20px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.group-title::before {
  content: '';
  display: block;
  width: 4px;
  height: 18px;
  background: var(--secondary);
  border-radius: 2px;
}

/* Fields */
.field {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field.inline {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}

.field label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.field-note {
  font-size: 12px;
  color: var(--text-muted);
  opacity: 0.8;
  margin-top: -4px;
  margin-bottom: 16px;
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--input-text);
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s;
}

input:focus,
select:focus {
  outline: none;
  background: rgba(0, 0, 0, 0.4);
  border-color: var(--secondary);
  box-shadow: 0 0 0 1px rgba(203, 180, 134, 0.3);
}

/* Switches */
.switch {
  position: relative;
  width: 52px;
  height: 30px;
}

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

.slider {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 34px;
  transition: .3s;
  border: 1px solid var(--card-border);
}

.slider:before {
  content: "";
  position: absolute;
  height: 22px;
  width: 22px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: .3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

input:checked+.slider {
  background: var(--primary);
  border-color: transparent;
}

input:checked+.slider:before {
  transform: translateX(22px);
}

/* Results Cards */
.results .cards {
  display: grid;
  gap: 24px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: fadeUp 0.5s ease backwards;
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:nth-child(1) {
  animation-delay: 0.1s;
}

.card:nth-child(2) {
  animation-delay: 0.2s;
}

.card:nth-child(3) {
  animation-delay: 0.3s;
}

.card:nth-child(4) {
  animation-delay: 0.4s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 25px 30px -5px rgba(0, 0, 0, 0.3);
}

.card-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-header h3 {
  font-size: 16px;
  color: var(--text-main);
}

.pill {
  background: var(--secondary);
  color: #05374A;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: none;
}

.card-body {
  padding: 24px;
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.row span {
  color: var(--text-muted);
  font-size: 14px;
}

.row strong {
  font-size: 16px;
  font-weight: 600;
}

/* Standard font for numbers */

.neg {
  color: var(--neg);
}

.pos {
  color: var(--pos);
}

hr {
  border: 0;
  border-top: 1px solid var(--card-border);
  margin: 16px 0;
}

.row.total {
  margin-top: 4px;
  padding-top: 4px;
}

.row.total span {
  color: var(--text-main);
  font-weight: 500;
}

.row.total strong {
  font-size: 18px;
}

.card.emphasis {
  border: 1px solid var(--golden-glow, rgba(241, 196, 15, 0.3));
  box-shadow: 0 0 20px rgba(241, 196, 15, 0.1);
}

.card.emphasis .card-header .pill {
  display: none;
}

/* Hide pill for summary if desired */
.card.emphasis .card-header h3 {
  color: var(--secondary);
}

/* Projection Table & Charts */
.proj-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.proj-summary .metric {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.proj-summary .metric span {
  font-size: 12px;
  color: var(--text-muted);
}

.proj-summary .metric strong {
  font-size: 18px;
  color: var(--text-main);
}

.chart-wrap {
  margin: 20px 0;
  padding: 16px;
  background: var(--chart-bg);
  border-radius: 16px;
  border: 1px solid var(--card-border);
}

.table-wrap {
  overflow-x: auto;
  margin-top: 20px;
  border-radius: 12px;
  border: 1px solid var(--card-border);
}

.proj-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.proj-table th {
  text-align: left;
  padding: 12px 16px;
  background: rgba(30, 41, 59, 0.95);
  color: var(--text-muted);
  font-weight: 500;
  border-bottom: 1px solid var(--card-border);
}

.proj-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--card-border);
  color: var(--text-main);
}

.proj-table tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

/* Helpers */
.hidden {
  display: none !important;
}

.expert-only {
  transition: opacity 0.3s;
}

.expert-hidden {
  display: none !important;
}

/* Responsive */
@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .controls {
    justify-content: flex-start;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}