/* LLMSpend.io - Modern High-Performance Stylesheet */
:root {
  --bg-primary: #090d16;
  --bg-secondary: #0d1322;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(30, 41, 59, 0.8);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(16, 185, 129, 0.4);
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.25);
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  line-height: 1.5;
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(16, 185, 129, 0.15), transparent),
    radial-gradient(circle at 10% 20%, rgba(6, 182, 212, 0.08), transparent 30%),
    radial-gradient(circle at 90% 70%, rgba(59, 130, 246, 0.06), transparent 30%);
  background-attachment: fixed;
  overflow-x: hidden;
}

/* Background Subtle Grid */
.bg-grid {
  position: fixed;
  inset: 0;
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  pointer-events: none;
  z-index: 0;
}

.content-wrapper {
  position: relative;
  z-index: 1;
}

/* Typography & Links */
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Nav */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.85);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.logo-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.925rem;
  color: var(--text-muted);
}

.nav-links a:hover {
  color: var(--text-main);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.6rem 1.25rem;
  border-radius: 0.5rem;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #022c22;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
  background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
  border-radius: 0.375rem;
}

/* Hero Section */
.hero-section {
  padding: 5rem 0 3.5rem;
  text-align: center;
}

.pill-announcement {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  font-size: 0.85rem;
  color: #34d399;
  margin-bottom: 1.75rem;
  transition: border-color 0.2s;
}

.pill-announcement:hover {
  border-color: rgba(16, 185, 129, 0.5);
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
}

.hero-gradient-text {
  background: linear-gradient(135deg, #10b981 10%, #06b6d4 50%, #60a5fa 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2.25rem;
  line-height: 1.6;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  max-width: 900px;
  margin: 3.5rem auto 0;
}

.stat-card {
  background: rgba(17, 24, 39, 0.4);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 1.25rem 1rem;
  text-align: center;
  backdrop-filter: blur(8px);
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Section Common */
.section {
  padding: 5rem 0;
  border-top: 1px solid var(--border-subtle);
}

.section-header {
  margin-bottom: 3rem;
  text-align: center;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-emerald);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto;
}

/* Calculator Grid */
.calculator-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 2rem;
  align-items: start;
}

.calc-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(12px);
}

.calc-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.calc-panel-title {
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Preset Chips */
.presets-group {
  margin-bottom: 1.75rem;
}

.presets-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.6rem;
}

.presets-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.preset-chip {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.15s;
}

.preset-chip:hover, .preset-chip.active {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: #34d399;
}

/* Inputs & Sliders */
.input-group {
  margin-bottom: 1.5rem;
}

.input-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.input-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.input-badge {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.1);
  padding: 0.15rem 0.5rem;
  border-radius: 0.25rem;
}

.range-slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.8);
  cursor: pointer;
  transition: transform 0.1s;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.toggle-group {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: 0.5rem;
  margin-top: 1rem;
}

.toggle-text h4 {
  font-size: 0.875rem;
  font-weight: 600;
}

.toggle-text p {
  font-size: 0.775rem;
  color: var(--text-dim);
}

/* Switch */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

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

.slider-switch {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.15);
  transition: 0.25s;
  border-radius: 24px;
}

.slider-switch:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.25s;
  border-radius: 50%;
}

input:checked + .slider-switch {
  background-color: var(--accent-emerald);
}

input:checked + .slider-switch:before {
  transform: translateX(20px);
}

/* Results Display */
.baseline-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 0.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
}

.baseline-select {
  background: #0f172a;
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.85rem;
}

.results-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.model-result-card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 1.1rem 1.25rem;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.model-result-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(30, 41, 59, 0.7);
}

.model-result-card.is-baseline {
  border-color: rgba(59, 130, 246, 0.4);
  background: rgba(30, 58, 138, 0.2);
}

.model-result-card.is-cheapest {
  border-color: rgba(16, 185, 129, 0.5);
  background: rgba(6, 78, 59, 0.2);
}

.result-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.6rem;
}

.result-model-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.provider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.result-model-name {
  font-weight: 700;
  font-size: 1rem;
}

.result-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
}

.result-badge-baseline {
  background: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.4);
}

.result-badge-best {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.result-price-column {
  text-align: right;
}

.result-monthly-total {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.result-per-req {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.result-bar-wrapper {
  margin: 0.6rem 0;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 9999px;
  height: 8px;
  overflow: hidden;
}

.result-bar-fill {
  height: 100%;
  border-radius: 9999px;
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.result-card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.775rem;
  color: var(--text-muted);
}

.savings-tag {
  font-weight: 600;
  color: #34d399;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.extra-cost-tag {
  color: #f87171;
}

/* Pricing Matrix Section */
.matrix-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.15s;
}

.filter-pill:hover, .filter-pill.active {
  background: var(--text-main);
  color: #090d16;
  border-color: var(--text-main);
}

.search-input-box {
  position: relative;
  min-width: 280px;
}

.search-input-box input {
  width: 100%;
  background: rgba(17, 24, 39, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: 0.5rem;
  padding: 0.5rem 1rem 0.5rem 2.25rem;
  color: var(--text-main);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s;
}

.search-input-box input:focus {
  border-color: var(--accent-emerald);
}

.search-icon-svg {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  fill: none;
  stroke: var(--text-dim);
}

/* Matrix Table */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  background: var(--bg-card);
  backdrop-filter: blur(8px);
}

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

.pricing-table th {
  background: rgba(15, 23, 42, 0.9);
  padding: 0.9rem 1.1rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  font-weight: 700;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.pricing-table td {
  padding: 1rem 1.1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  vertical-align: middle;
}

.pricing-table tr:hover td {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-main);
}

.pricing-table td.col-model {
  font-weight: 600;
  color: var(--text-main);
}

.table-tag {
  display: inline-block;
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--text-dim);
  margin-left: 0.5rem;
}

/* Proxy / Architecture Section */
.proxy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.code-window {
  background: #0a0f1d;
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(15, 23, 42, 0.8);
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.window-dots {
  display: flex;
  gap: 0.4rem;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.code-tabs {
  display: flex;
  gap: 0.5rem;
}

.code-tab {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0.2rem 0.5rem;
  border-radius: 0.25rem;
}

.code-tab.active {
  color: #34d399;
  background: rgba(16, 185, 129, 0.1);
}

pre.code-body {
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  overflow-x: auto;
  color: #cbd5e1;
}

.feature-cards-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.feature-box {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  transition: border-color 0.2s;
}

.feature-box:hover {
  border-color: rgba(16, 185, 129, 0.3);
}

.feature-icon-box {
  width: 42px;
  height: 42px;
  border-radius: 0.5rem;
  background: rgba(16, 185, 129, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #34d399;
  flex-shrink: 0;
}

.feature-box h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.feature-box p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Playbook / Checklist */
.playbook-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.playbook-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 1.5rem;
  transition: transform 0.2s;
}

.playbook-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.15);
}

.playbook-number {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent-emerald);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.playbook-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.playbook-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Waitlist Box */
.waitlist-card {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(6, 182, 212, 0.08) 100%), var(--bg-card);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 1.25rem;
  padding: 3.5rem 2rem;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  box-shadow: 0 20px 40px -15px rgba(16, 185, 129, 0.15);
}

.waitlist-card h2 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.waitlist-card p {
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 2rem;
}

.waitlist-form {
  display: flex;
  gap: 0.75rem;
  max-width: 460px;
  margin: 0 auto;
}

.waitlist-input {
  flex: 1;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  color: var(--text-main);
  font-size: 0.925rem;
  outline: none;
}

.waitlist-input:focus {
  border-color: var(--accent-emerald);
}

.waitlist-success {
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid rgba(16, 185, 129, 0.5);
  color: #34d399;
  padding: 1rem;
  border-radius: 0.5rem;
  font-weight: 600;
  display: none;
}

/* Footer */
footer.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 0;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a:hover {
  color: var(--text-main);
}

/* Responsive */
@media (max-width: 960px) {
  .calculator-grid, .proxy-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .hero-stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .playbook-grid {
    grid-template-columns: 1fr;
  }
  .waitlist-form {
    flex-direction: column;
  }
  .nav-links {
    display: none;
  }
}