/* ============================================================
   MOYSIZ Design System
   Enterprise Platform for Oil Change Management
   Version: 2.0 | Theme: Dark (Default)
   ============================================================ */

/* ---------- CSS Custom Properties (Design Tokens) ---------- */
:root {
  /* === Colors — Backgrounds === */
  --bg-primary: #0a0c14;
  --bg-secondary: #11131f;
  --bg-card: rgba(26, 29, 46, 0.9);
  --bg-card-solid: #1a1d2e;
  --bg-hover: rgba(59, 130, 246, 0.08);
  --bg-active: rgba(59, 130, 246, 0.12);
  --bg-input: rgba(17, 19, 31, 0.8);
  --bg-overlay: rgba(0, 0, 0, 0.6);
  --bg-skeleton: linear-gradient(90deg, rgba(26,29,46,0.6) 25%, rgba(40,44,66,0.6) 50%, rgba(26,29,46,0.6) 75%);

  /* === Colors — Accents === */
  --accent-primary: #3b82f6;
  --accent-primary-hover: #2563eb;
  --accent-primary-light: rgba(59, 130, 246, 0.15);
  --accent-secondary: #6366f1;
  --accent-secondary-hover: #4f46e5;
  --accent-gradient: linear-gradient(135deg, #3b82f6, #6366f1);
  --accent-gradient-hover: linear-gradient(135deg, #2563eb, #4f46e5);

  /* === Colors — Semantic === */
  --color-success: #10b981;
  --color-success-light: rgba(16, 185, 129, 0.15);
  --color-warning: #f59e0b;
  --color-warning-light: rgba(245, 158, 11, 0.15);
  --color-danger: #ef4444;
  --color-danger-light: rgba(239, 68, 68, 0.15);
  --color-info: #3b82f6;
  --color-info-light: rgba(59, 130, 246, 0.15);

  /* === Colors — Text === */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-disabled: #475569;
  --text-inverse: #0a0c14;

  /* === Colors — Borders === */
  --border-default: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(59, 130, 246, 0.3);
  --border-focus: rgba(59, 130, 246, 0.5);

  /* === Typography === */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  --fs-hero: clamp(2.5rem, 5vw, 4rem);
  --fs-h1: 2rem;
  --fs-h2: 1.5rem;
  --fs-h3: 1.25rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-micro: 0.75rem;

  --lh-tight: 1.2;
  --lh-normal: 1.5;
  --lh-relaxed: 1.7;

  /* === Spacing === */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* === Layout === */
  --sidebar-width: 260px;
  --header-height: 64px;
  --border-radius-sm: 6px;
  --border-radius-md: 10px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-full: 9999px;
  --content-max-width: 1440px;

  /* === Shadows === */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
  --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.2);

  /* === Transitions === */
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 600ms;
  --transition-colors: color var(--duration-fast) var(--ease-default),
                        background-color var(--duration-fast) var(--ease-default),
                        border-color var(--duration-fast) var(--ease-default);
  --transition-transform: transform var(--duration-normal) var(--ease-default);
  --transition-all: all var(--duration-normal) var(--ease-default);

  /* === Z-index scale === */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-sidebar: 300;
  --z-overlay: 400;
  --z-modal: 500;
  --z-toast: 600;
  --z-tooltip: 700;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

img, video, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: var(--transition-colors);
}

a:hover {
  color: var(--accent-primary-hover);
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

ul, ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

/* ---------- Base Typography ---------- */
h1, .h1 {
  font-size: var(--fs-h1);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

h2, .h2 {
  font-size: var(--fs-h2);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-tight);
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

h3, .h3 {
  font-size: var(--fs-h3);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-tight);
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
}

small, .text-small {
  font-size: var(--fs-small);
}

.text-micro {
  font-size: var(--fs-micro);
}

.text-mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
  letter-spacing: 0.02em;
}

.text-muted {
  color: var(--text-secondary);
}

.text-disabled {
  color: var(--text-disabled);
}

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

.text-warning {
  color: var(--color-warning);
}

.text-danger {
  color: var(--color-danger);
}

.text-accent {
  color: var(--accent-primary);
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Utility Classes ---------- */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.hidden {
  display: none !important;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

.gap-1 { gap: var(--sp-1); }
.gap-2 { gap: var(--sp-2); }
.gap-3 { gap: var(--sp-3); }
.gap-4 { gap: var(--sp-4); }
.gap-6 { gap: var(--sp-6); }
.gap-8 { gap: var(--sp-8); }

.grid {
  display: grid;
}

.w-full {
  width: 100%;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--text-disabled);
  border-radius: var(--border-radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ---------- Selection ---------- */
::selection {
  background: var(--accent-primary-light);
  color: var(--text-primary);
}

/* ---------- Focus Visible ---------- */
:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}