/* ==========================================================================
   Phone Exchange Design System
   Ported 1:1 from React/Tailwind source design tokens
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   Source: src/index.css :root
   -------------------------------------------------------------------------- */
:root {
  /* ── Bare HSL value variables (used by hsl()/hsla() patterns in templates) ── */
  --background: 30, 25%, 96%;
  --foreground: 0, 0%, 10%;
  --card: 0, 0%, 100%;
  --card-foreground: 0, 0%, 10%;
  --popover: 0, 0%, 100%;
  --popover-foreground: 0, 0%, 10%;
  --primary: 0, 0%, 12%;
  --primary-foreground: 0, 0%, 98%;
  --secondary: 30, 15%, 92%;
  --secondary-foreground: 0, 0%, 15%;
  --muted: 30, 10%, 93%;
  --muted-foreground: 0, 0%, 45%;
  --accent: 190, 100%, 45%;
  --accent-foreground: 0, 0%, 100%;
  --destructive: 0, 84.2%, 60.2%;
  --destructive-foreground: 0, 0%, 100%;
  --border: 30, 12%, 82%;
  --input: 30, 12%, 85%;
  --ring: 0, 0%, 12%;

  /* Core palette */
  --pe-background: hsl(var(--background));
  --pe-foreground: hsl(var(--foreground));

  /* Card surfaces */
  --pe-card: hsl(var(--card));
  --pe-card-foreground: hsl(var(--card-foreground));
  --pe-card-shadow: 0 1px 4px 0 hsla(0, 0%, 0%, 0.06);

  /* Popover */
  --pe-popover: hsl(var(--popover));
  --pe-popover-foreground: hsl(var(--popover-foreground));

  /* Primary (near-black) */
  --pe-primary: hsl(var(--primary));
  --pe-primary-foreground: hsl(var(--primary-foreground));

  /* Secondary (warm light) */
  --pe-secondary: hsl(var(--secondary));
  --pe-secondary-foreground: hsl(var(--secondary-foreground));

  /* Muted */
  --pe-muted: hsl(var(--muted));
  --pe-muted-foreground: hsl(var(--muted-foreground));

  /* Accent (teal) */
  --pe-accent: hsl(var(--accent));
  --pe-accent-foreground: hsl(var(--accent-foreground));

  /* Destructive */
  --pe-destructive: hsl(var(--destructive));
  --pe-destructive-foreground: hsl(var(--destructive-foreground));

  /* Borders & inputs */
  --pe-border: hsl(var(--border));
  --pe-input: hsl(var(--input));
  --pe-ring: hsl(var(--ring));

  /* Radius */
  --radius: 0.75rem;
  --pe-radius: var(--radius);
  --pe-radius-md: calc(var(--radius) - 2px);
  --pe-radius-sm: calc(var(--radius) - 4px);

  /* Eco brand tokens */
  --eco-leaf: 190, 100%, 45%;
  --eco-mint: 190, 30%, 92%;
  --eco-sand: 30, 25%, 92%;
  --eco-bark: 0, 0%, 12%;
  --eco-moss: 190, 60%, 35%;
  --pe-eco-leaf: hsl(var(--eco-leaf));
  --pe-eco-mint: hsl(var(--eco-mint));
  --pe-eco-sand: hsl(var(--eco-sand));
  --pe-eco-bark: hsl(var(--eco-bark));
  --pe-eco-moss: hsl(var(--eco-moss));

  /* Condition grades */
  --condition-excellent: 152, 55%, 35%;
  --condition-good: 80, 50%, 45%;
  --condition-fair: 42, 80%, 55%;
  --pe-condition-excellent: hsl(var(--condition-excellent));
  --pe-condition-good: hsl(var(--condition-good));
  --pe-condition-fair: hsl(var(--condition-fair));

  /* Header/Footer dark bg */
  --pe-header-bg: hsl(0, 0%, 8%);
  --pe-footer-bg: hsl(0, 0%, 8%);

  /* Container */
  --pe-container-max: 1400px;
  --pe-container-padding: 1rem;

  /* Font families */
  --font-heading: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  --font-body: "DM Sans", system-ui, -apple-system, sans-serif;

  /* Transitions */
  --pe-transition-fast: 150ms ease;
  --pe-transition-base: 200ms ease;
  --pe-transition-slow: 300ms ease;
}


/* --------------------------------------------------------------------------
   Typography
   Fonts: Plus Jakarta Sans (headings), DM Sans (body)
   -------------------------------------------------------------------------- */
body {
  font-family: "DM Sans", system-ui, -apple-system, sans-serif;
  color: var(--pe-foreground);
  background-color: var(--pe-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--pe-foreground);
}


/* --------------------------------------------------------------------------
   Layout Container
   max-width: 1400px, centered, 1rem padding
   -------------------------------------------------------------------------- */
.pe-container {
  max-width: var(--pe-container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--pe-container-padding);
  padding-right: var(--pe-container-padding);
  width: 100%;
}


/* --------------------------------------------------------------------------
   Utility Gradients
   -------------------------------------------------------------------------- */
.eco-gradient {
  background: linear-gradient(135deg, hsl(0, 0%, 12%), hsl(0, 0%, 22%));
}

.eco-gradient-subtle {
  background: linear-gradient(135deg, hsl(30, 15%, 92%), hsl(30, 20%, 95%));
}


/* --------------------------------------------------------------------------
   Condition Badges
   -------------------------------------------------------------------------- */
.condition-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  border-radius: var(--pe-radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.condition-badge--excellent {
  background-color: var(--pe-condition-excellent);
  color: #fff;
}

.condition-badge--good {
  background-color: var(--pe-condition-good);
  color: #fff;
}

.condition-badge--fair {
  background-color: var(--pe-condition-fair);
  color: var(--pe-foreground);
}


/* --------------------------------------------------------------------------
   Card Base
   -------------------------------------------------------------------------- */
.pe-card {
  background-color: var(--pe-card);
  border-radius: var(--pe-radius);
  box-shadow: var(--pe-card-shadow);
  overflow: hidden;
}


/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.pe-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--pe-radius-md);
  font-family: "DM Sans", system-ui, sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.25;
  cursor: pointer;
  border: none;
  transition: background-color var(--pe-transition-fast),
              color var(--pe-transition-fast),
              box-shadow var(--pe-transition-fast),
              transform var(--pe-transition-fast);
  text-decoration: none;
}

.pe-btn:hover {
  transform: translateY(-1px);
}

.pe-btn:active {
  transform: translateY(0);
}

.pe-btn--primary {
  background-color: var(--pe-primary);
  color: var(--pe-primary-foreground);
}

.pe-btn--primary:hover {
  background-color: hsl(0, 0%, 20%);
}

.pe-btn--accent {
  background-color: var(--pe-accent);
  color: var(--pe-accent-foreground);
}

.pe-btn--accent:hover {
  background-color: hsl(190, 100%, 38%);
}

.pe-btn--secondary {
  background-color: var(--pe-secondary);
  color: var(--pe-secondary-foreground);
}

.pe-btn--secondary:hover {
  background-color: hsl(30, 15%, 87%);
}

.pe-btn--outline {
  background-color: transparent;
  color: var(--pe-foreground);
  border: 1px solid var(--pe-border);
}

.pe-btn--outline:hover {
  background-color: var(--pe-secondary);
}

.pe-btn--ghost {
  background-color: transparent;
  color: var(--pe-foreground);
}

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

.pe-btn--lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

.pe-btn--sm {
  padding: 0.375rem 0.875rem;
  font-size: 0.8125rem;
}

.pe-btn--icon {
  padding: 0.625rem;
  width: 2.5rem;
  height: 2.5rem;
}


/* --------------------------------------------------------------------------
   Form Inputs
   -------------------------------------------------------------------------- */
.pe-input {
  display: block;
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--pe-border);
  border-radius: var(--pe-radius-md);
  background-color: var(--pe-card);
  font-family: "DM Sans", system-ui, sans-serif;
  font-size: 0.875rem;
  color: var(--pe-foreground);
  transition: border-color var(--pe-transition-fast), box-shadow var(--pe-transition-fast);
}

.pe-input:focus {
  outline: none;
  border-color: var(--pe-accent);
  box-shadow: 0 0 0 3px hsla(190, 100%, 45%, 0.15);
}

.pe-input::placeholder {
  color: var(--pe-muted-foreground);
}


/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes pe-fade-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.pe-animate-fade-in {
  animation: pe-fade-in 0.5s ease-out forwards;
}

@keyframes pe-slide-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.pe-animate-slide-up {
  animation: pe-slide-up 0.4s ease-out forwards;
}


/* --------------------------------------------------------------------------
   Scrollbar Styling
   -------------------------------------------------------------------------- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--pe-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--pe-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--pe-muted-foreground);
}


/* --------------------------------------------------------------------------
   Visually Hidden (accessibility)
   -------------------------------------------------------------------------- */
.pe-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}