/* ============================================
   ClanAscend Web UI — DESIGN.md Tokens
   Monochromatic architectural blueprint
   ============================================ */

/* --- Custom Properties (Tokens) --- */
:root {
  /* Colors */
  --color-canvas-white: #ffffff;
  --color-ghost-gray: #f2f2f2;
  --color-subtle-ash: #e5e5e5;
  --color-midtone-gray: #737373;
  --color-rich-black: #0a0a0a;
  --color-deep-black: #000000;
  --color-callout-red: #c22b10;
  --color-success-green: #10c22b;

  /* Typography */
  --font-geist: 'Geist', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-geist-mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --text-caption: 12px;
  --leading-caption: 1.5;
  --text-body: 14px;
  --leading-body: 1.43;
  --text-heading: 18px;
  --leading-heading: 1.33;
  --tracking-heading: -0.45px;
  --text-display: 48px;
  --leading-display: 1;
  --tracking-display: -2.4px;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;

  /* Spacing */
  --spacing-4: 4px;
  --spacing-5: 5px;
  --spacing-6: 6px;
  --spacing-8: 8px;
  --spacing-10: 10px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-20: 20px;
  --spacing-24: 24px;
  --spacing-32: 32px;
  --spacing-40: 40px;
  --spacing-80: 80px;
  --spacing-83: 83px;

  /* Layout */
  --section-gap: 83px;
  --card-padding: 16px;
  --element-gap: 8px;

  /* Border Radius */
  --radius-pill: 9999px;
  --radius-badge: 26px;
  --radius-cards: 14px;
  --radius-input: 10px;
  --radius-buttons: 10px;
  --radius-default: 10px;

  /* Shadows */
  --shadow-subtle: 0px 0px 0px 2px #ffffff;
  --shadow-subtle-2: 0px 0px 0px 1px oklab(0.145 -0.00000143796 0.00000340492 / 0.1);

  /* Surfaces */
  --surface-canvas-white: #ffffff;
  --surface-elevated-card: #ffffff;
  --surface-searchinput-field: #ffffff;
  --surface-popoversoverlays: #ffffff;
  --surface-ghost-gray-background: #f2f2f2;
}

/* --- Dark Mode Overrides --- */
[data-theme="dark"] {
  --color-canvas-white: #111111;
  --color-ghost-gray: #1a1a1a;
  --color-subtle-ash: #2a2a2a;
  --color-midtone-gray: #a3a3a3;
  --color-rich-black: #e5e5e5;
  --color-deep-black: #ffffff;
  --color-callout-red: #ff4d4d;
  --color-success-green: #4dff4d;

  --surface-canvas-white: #111111;
  --surface-elevated-card: #1a1a1a;
  --surface-searchinput-field: #222222;
  --surface-popoversoverlays: #1a1a1a;
  --surface-ghost-gray-background: #252525;

  --shadow-subtle-2: 0px 0px 0px 1px rgba(255,255,255,0.08);

  /* Base background and text */
  background-color: var(--color-canvas-white);
  color: var(--color-rich-black);
}

/* --- Base Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-geist);
  font-weight: var(--font-weight-regular);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-rich-black);
  background-color: var(--color-canvas-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.3s, color 0.3s;
}

/* --- Typography --- */
.display {
  font-size: var(--text-display);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
  font-weight: var(--font-weight-semibold);
  color: var(--color-deep-black);
}

.heading {
  font-size: var(--text-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--font-weight-medium);
  color: var(--color-rich-black);
}

.body-text {
  font-size: var(--text-body);
  line-height: var(--leading-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-rich-black);
}

.caption {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  font-weight: var(--font-weight-regular);
  color: var(--color-midtone-gray);
}

code, pre, .mono {
  font-family: var(--font-geist-mono);
  font-size: 14px;
  line-height: 1.43;
}

/* --- Navigation Bar --- */
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--surface-canvas-white);
  padding: var(--spacing-8) var(--spacing-24);
  border-bottom: 1px solid var(--color-subtle-ash);
  gap: var(--element-gap);
  transition: background-color 0.3s, border-color 0.3s;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-16);
}

.nav-links a {
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-rich-black);
  text-decoration: none;
  transition: opacity 0.2s, color 0.3s;
}

.nav-links a:hover {
  opacity: 0.7;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--element-gap);
}

/* --- Theme Toggle Button --- */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--color-subtle-ash);
  border-radius: var(--radius-badge);
  padding: 2px 10px;
  font-family: var(--font-geist);
  font-size: var(--text-caption);
  font-weight: var(--font-weight-medium);
  color: var(--color-rich-black);
  cursor: pointer;
  transition: all 0.2s, border-color 0.3s, color 0.3s;
  line-height: 1;
}

.theme-toggle:hover {
  background-color: var(--color-ghost-gray);
}

/* --- Buttons --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-deep-black);
  color: var(--color-canvas-white);
  border: none;
  border-radius: var(--radius-buttons);
  padding: var(--spacing-8) 48px;
  font-family: var(--font-geist);
  font-size: var(--text-body);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: opacity 0.2s, background-color 0.3s, color 0.3s;
  text-decoration: none;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  color: var(--color-rich-black);
  border: none;
  border-radius: var(--radius-pill);
  padding: var(--spacing-8) var(--spacing-16);
  font-family: var(--font-geist);
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  cursor: pointer;
  transition: background-color 0.2s, color 0.3s;
  text-decoration: none;
}

.btn-ghost:hover {
  background-color: var(--color-ghost-gray);
}

/* Split Button */
.split-btn-group {
  display: inline-flex;
  border: 1px solid var(--color-subtle-ash);
  border-radius: var(--radius-buttons);
  overflow: hidden;
}

.split-btn-left,
.split-btn-right {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-canvas-white);
  color: var(--color-deep-black);
  border: none;
  padding: var(--spacing-4) var(--spacing-10);
  font-family: var(--font-geist);
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  cursor: pointer;
  transition: background-color 0.2s, color 0.3s, background-color 0.3s;
}

.split-btn-left {
  border-radius: var(--radius-buttons) 0 0 var(--radius-buttons);
}

.split-btn-right {
  border-radius: 0 var(--radius-buttons) var(--radius-buttons) 0;
  border-left: 1px solid var(--color-subtle-ash);
}

.split-btn-left:hover,
.split-btn-right:hover {
  background-color: var(--color-ghost-gray);
}

/* --- Elevated Card --- */
.card-elevated {
  background-color: var(--surface-elevated-card);
  border-radius: var(--radius-cards);
  box-shadow: var(--shadow-subtle-2);
  padding: var(--card-padding);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
  transition: background-color 0.3s, box-shadow 0.3s;
}

.card-elevated .card-title {
  font-size: 16px;
  font-weight: var(--font-weight-medium);
  color: var(--color-rich-black);
}

.card-elevated .card-body {
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-midtone-gray);
}

/* --- Input Fields --- */
.input-field {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.input-field label {
  font-size: var(--text-caption);
  font-weight: var(--font-weight-medium);
  color: var(--color-rich-black);
}

.input-field input,
.input-field textarea,
.input-field select {
  background-color: transparent;
  color: var(--color-rich-black);
  border: 1px solid var(--color-subtle-ash);
  border-radius: var(--radius-input);
  padding: var(--spacing-4) var(--spacing-10);
  font-family: var(--font-geist);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  outline: none;
  transition: border-color 0.2s, color 0.3s, border-color 0.3s;
}

.input-field input:focus,
.input-field textarea:focus,
.input-field select:focus {
  border-color: var(--color-deep-black);
  box-shadow: 0 0 0 2px rgba(0,0,0,0.05);
}

.input-field input::placeholder,
.input-field textarea::placeholder {
  color: var(--color-midtone-gray);
}

/* Segmented Input Group */
.input-group-segmented {
  display: flex;
  border: 1px solid var(--color-subtle-ash);
  border-radius: var(--radius-input);
  overflow: hidden;
}

.input-group-segmented .segmented-left {
  flex: 1;
  border: none;
  border-radius: var(--radius-input) 0 0 var(--radius-input);
  padding: var(--spacing-4) var(--spacing-10);
  font-family: var(--font-geist);
  font-size: var(--text-body);
  color: var(--color-rich-black);
  background-color: transparent;
  outline: none;
}

.input-group-segmented .segmented-right {
  flex: 0 0 auto;
  border: none;
  border-left: 1px solid var(--color-subtle-ash);
  border-radius: 0 var(--radius-input) var(--radius-input) 0;
  padding: var(--spacing-4) var(--spacing-10);
  font-family: var(--font-geist);
  font-size: var(--text-body);
  color: var(--color-rich-black);
  background-color: transparent;
  outline: none;
}

.input-group-segmented .segmented-left:focus,
.input-group-segmented .segmented-right:focus {
  box-shadow: inset 0 0 0 1px var(--color-deep-black);
}

/* --- Badges --- */
.badge-inverse {
  display: inline-flex;
  align-items: center;
  background-color: #171717;
  color: var(--color-canvas-white);
  border-radius: var(--radius-badge);
  padding: 2px var(--spacing-8);
  font-family: var(--font-geist);
  font-size: var(--text-caption);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  transition: background-color 0.3s, color 0.3s;
}

[data-theme="dark"] .badge-inverse {
  background-color: #e5e5e5;
  color: #111111;
}

.badge-neutral {
  display: inline-flex;
  align-items: center;
  background-color: var(--color-ghost-gray);
  color: var(--color-rich-black);
  border-radius: var(--radius-badge);
  padding: 2px var(--spacing-8);
  font-family: var(--font-geist);
  font-size: var(--text-caption);
  font-weight: var(--font-weight-regular);
  white-space: nowrap;
  transition: background-color 0.3s, color 0.3s;
}

.badge-outline {
  display: inline-flex;
  align-items: center;
  background-color: transparent;
  color: var(--color-rich-black);
  border: 1px solid #a1a1a1;
  border-radius: var(--radius-badge);
  padding: 2px var(--spacing-8);
  font-family: var(--font-geist);
  font-size: var(--text-caption);
  font-weight: var(--font-weight-regular);
  white-space: nowrap;
  transition: color 0.3s, border-color 0.3s;
}

[data-theme="dark"] .badge-outline {
  border-color: #555555;
}

/* --- Layout Helpers --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-24);
}

.section {
  margin-bottom: var(--section-gap);
}

.flex-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--element-gap);
}

.flex-col {
  display: flex;
  flex-direction: column;
  gap: var(--element-gap);
}

.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
}

.grid-3col {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--spacing-16);
}

.hero {
  text-align: center;
  padding: var(--spacing-80) 0 var(--spacing-40);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-16);
}

.hero .display {
  max-width: 800px;
}

.hero .body-text {
  max-width: 600px;
  color: var(--color-midtone-gray);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
  margin-top: var(--spacing-8);
}

/* --- Tables (data display) --- */
.table-responsive {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-geist);
  font-size: var(--text-body);
}

table th {
  text-align: left;
  font-weight: var(--font-weight-medium);
  color: var(--color-midtone-gray);
  padding: var(--spacing-8) var(--spacing-12);
  border-bottom: 1px solid var(--color-subtle-ash);
}

table td {
  padding: var(--spacing-8) var(--spacing-12);
  border-bottom: 1px solid var(--color-subtle-ash);
  color: var(--color-rich-black);
}

table tr:last-child td {
  border-bottom: none;
}

/* --- Utilities --- */
.text-muted {
  color: var(--color-midtone-gray);
}

.text-deep {
  color: var(--color-deep-black);
}

.text-red {
  color: var(--color-callout-red);
}

.text-green {
  color: var(--color-success-green);
}

.bg-ghost {
  background-color: var(--color-ghost-gray);
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-canvas-white);
}

::-webkit-scrollbar-thumb {
  background: var(--color-subtle-ash);
  border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-midtone-gray);
}

/* --- Pre/Code Blocks --- */
pre.mono {
  background-color: var(--color-ghost-gray) !important;
  color: var(--color-rich-black);
  transition: background-color 0.3s, color 0.3s;
}

[data-theme="dark"] pre.mono {
  background-color: #1e1e1e !important;
  color: #d4d4d4;
}

code {
  background-color: var(--color-ghost-gray);
  padding: 1px 4px;
  border-radius: 4px;
  font-size: 0.9em;
}

[data-theme="dark"] code {
  background-color: #2a2a2a;
}

/* --- Footer --- */
footer {
  border-top: 1px solid var(--color-subtle-ash);
  transition: border-color 0.3s;
}