/* ============================================================
   ODX Admin — "Kernel" theme tokens
   Visual language ported from Swift's kernel.css (June 2026):
   void-dark surfaces, electric violet + acid yellow accents,
   Unbounded display / Space Grotesk body / JetBrains Mono data.
   DARK IS THE DEFAULT (:root); [data-theme="light"] is the
   fallback variant for the existing theme toggle.
   Token NAMES are unchanged — every page stylesheet keys off them.
   ============================================================ */

:root {
  /* kernel primitives */
  --void: #05030c;
  --panel: #0c0918;
  --panel-2: #100c20;
  --tile: #0e0a1c;
  --tile-hi: #15102a;
  --line: #251d44;
  --line-hi: #372b66;
  --violet: #2d00f4;
  --violet-soft: #6a4bff;
  --acid: #fff582;
  --acid-soft: rgba(255, 245, 130, 0.12);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --font-display: "Unbounded", sans-serif;
  --font-body: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  /* legacy token names, remapped to the kernel palette */
  --bg-primary: var(--void);
  --bg-secondary: var(--panel);
  --bg-tertiary: var(--panel-2);
  --bg-hover: var(--tile-hi);

  --text-primary: #f4f2ff;
  --text-secondary: #9a92c2;
  --text-tertiary: #6b6394;

  --border-color: var(--line);
  --border-hover: var(--line-hi);

  --accent-primary: var(--violet-soft);
  --accent-hover: #7d63ff;
  --accent-light: rgba(106, 75, 255, 0.14);

  --success: #4ade80;
  --error: #ff5c72;
  --warning: #ffb454;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px -8px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(45, 0, 244, 0.06);
  --shadow-lg: 0 22px 60px -20px rgba(45, 0, 244, 0.36), 0 18px 44px -18px rgba(0, 0, 0, 0.7);
  --shadow-xl: 0 22px 60px -20px rgba(45, 0, 244, 0.4), 0 46px 100px -36px rgba(0, 0, 0, 0.85);

  --card-bg: var(--panel);
  --card-shadow: var(--shadow-md);
  --card-border: var(--line);

  --input-bg: rgba(5, 3, 12, 0.55);
  --input-border: var(--line);
  --input-focus: var(--acid);

  --gradient-start: var(--violet);
  --gradient-end: var(--violet-soft);

  --disabled-bg: var(--tile);
  --disabled-text: #544d7d;
}

/* Light fallback — same violet/acid identity on paper surfaces */
[data-theme="light"] {
  --void: #f5f4fb;
  --panel: #ffffff;
  --panel-2: #f4f2fc;
  --tile: #faf9fe;
  --tile-hi: #efecfa;
  --line: #e3def4;
  --line-hi: #cdc5ea;
  --violet: #3712e8;
  --violet-soft: #5435f0;
  --acid: #f5e545;
  --acid-soft: rgba(196, 178, 9, 0.14);

  --bg-primary: var(--void);
  --bg-secondary: var(--panel);
  --bg-tertiary: var(--panel-2);
  --bg-hover: var(--tile-hi);

  --text-primary: #171130;
  --text-secondary: #4b4570;
  --text-tertiary: #756e9b;

  --border-color: var(--line);
  --border-hover: var(--line-hi);

  --accent-primary: var(--violet-soft);
  --accent-hover: #4527d8;
  --accent-light: #ebe7ff;

  --success: #18a55a;
  --error: #e03550;
  --warning: #d98316;

  --shadow-sm: 0 1px 2px 0 rgba(23, 17, 48, 0.06);
  --shadow-md: 0 6px 18px -6px rgba(55, 18, 232, 0.10), 0 2px 6px -2px rgba(23, 17, 48, 0.06);
  --shadow-lg: 0 16px 40px -16px rgba(55, 18, 232, 0.18), 0 8px 20px -10px rgba(23, 17, 48, 0.10);
  --shadow-xl: 0 24px 60px -20px rgba(55, 18, 232, 0.22), 0 14px 34px -16px rgba(23, 17, 48, 0.14);

  --card-bg: var(--panel);
  --card-shadow: var(--shadow-md);
  --card-border: var(--line);

  --input-bg: #ffffff;
  --input-border: var(--line-hi);
  --input-focus: var(--violet-soft);

  --gradient-start: var(--violet);
  --gradient-end: #8b5cf6;

  --disabled-bg: var(--panel-2);
  --disabled-text: #a39cc6;
}

/* ==================== Base Styles ==================== */

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==================== Theme Toggle Button ==================== */

.theme-toggle {
  position: relative;
  width: 48px;
  height: 48px;
  border: none;
  background: var(--bg-tertiary);
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s var(--ease);
  border: 1px solid var(--border-color);
}

.theme-toggle:hover {
  background: var(--bg-hover);
  border-color: var(--border-hover);
}

.theme-toggle:active {
  transform: scale(0.95);
}

.theme-toggle svg {
  width: 24px;
  height: 24px;
  color: var(--text-secondary);
  transition: all 0.3s var(--ease);
}

.theme-toggle:hover svg {
  color: var(--acid);
}

[data-theme="light"] .theme-toggle:hover svg {
  color: var(--violet-soft);
}

.theme-toggle .sun-icon {
  position: absolute;
  opacity: 0;
  transform: rotate(180deg) scale(0.5);
}

.theme-toggle .moon-icon {
  position: absolute;
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="light"] .theme-toggle .sun-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="light"] .theme-toggle .moon-icon {
  opacity: 0;
  transform: rotate(-180deg) scale(0.5);
}

/* ==================== Smooth Transitions ==================== */

.fade-in {
  animation: fadeIn 0.4s var(--ease);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== Utility Classes ==================== */

.gradient-text {
  background: linear-gradient(135deg, var(--violet-soft), var(--acid));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card {
  background: linear-gradient(180deg, var(--panel-2), var(--panel) 60%);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  box-shadow: var(--card-shadow);
  transition: all 0.3s var(--ease);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}