/**
 * ELEKTRORAF — Design System Tokens & Base Styles
 * Brand character: Teknik + Güvenilir + Modern + Endüstriyel + Profesyonel
 */

/* Font: Manrope is loaded via <link> in header.html — no @import needed */

:root {
  /* --- Brand Colors --- */
  --color-brand: #B8CE02;
  --color-brand-rgb: 184, 206, 2;
  --color-brand-dark: #728000;
  --color-brand-light: #f2f7cc;

  /* --- Dark Tones --- */
  --color-carbon: #161B22;
  --color-graphite: #27313B;
  --color-graphite-hover: #323e4a;

  /* --- CTA (Signal Action) --- */
  --color-action: #F26522;
  --color-action-hover: #D94F12;
  --color-action-active: #BF3E07;

  /* --- Light Backgrounds & Surfaces --- */
  --color-background: #F6F8FA;
  --color-surface: #FFFFFF;
  --color-surface-soft: #EEF2F4;
  --color-surface-subtle: #F0F4F7;

  /* --- Borders --- */
  --color-border: #DCE2E7;
  --color-border-subtle: #E8ECEF;
  --color-border-dark: #374350;

  /* --- Typography Colors --- */
  --color-heading: #161B22;
  --color-text: #27313B;
  --color-text-muted: #66717C;
  --color-placeholder: #98A2AC;
  --color-text-inverse: #FFFFFF;
  --color-text-inverse-muted: #BCC5CD;

  /* --- Semantic Feedback Colors --- */
  --color-success: #2E9B62;
  --color-success-soft: #eaf6ef;
  --color-warning: #E7A21A;
  --color-warning-soft: #fdf5e6;
  --color-error: #D93C3C;
  --color-error-soft: #fbecec;
  --color-info: #3677C8;
  --color-info-soft: #edf4fc;

  /* --- Border Radius System --- */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-card: 8px;
  --radius-lg: 12px;
  --radius-pill: 9999px;

  /* --- Shadows (Subtle, Clean) --- */
  --shadow-card: 0 2px 8px rgba(22, 27, 34, 0.06);
  --shadow-card-hover: 0 6px 20px rgba(22, 27, 34, 0.10);
  --shadow-dropdown: 0 8px 24px rgba(22, 27, 34, 0.12);
  --shadow-header: 0 4px 16px rgba(22, 27, 34, 0.15);

  /* --- Spacing Scale (4px-based) --- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* --- Typography Hierarchy --- */
  --font-sans: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --text-display: 3rem;       /* 48px */
  --text-hero: 2.5rem;        /* 40px */
  --text-h1: 2.25rem;         /* 36px */
  --text-h2: 1.875rem;        /* 30px */
  --text-h3: 1.5rem;          /* 24px */
  --text-h4: 1.25rem;         /* 20px */
  --text-body-lg: 1.125rem;   /* 18px */
  --text-body: 1rem;          /* 16px */
  --text-body-sm: 0.875rem;   /* 14px */
  --text-caption: 0.75rem;    /* 12px */

  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;

  /* --- Transitions --- */
  --transition-fast: 150ms ease-out;
  --transition-normal: 200ms ease-out;
}

/* --- Base Reset & Typography ---
 * NOTE: Box-sizing reset is in layout.css (loaded after this file).
 * This file defines only tokens, typography defaults & components.
 */

h1, h2, h3, h4, h5, h6 {
  color: var(--color-heading);
  font-weight: 700;
  line-height: var(--leading-tight);
}

a {
  color: var(--color-brand-dark);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-carbon);
}

/* --- Button System --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-size: var(--text-body-sm);
  font-weight: 600;
  line-height: 1;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  box-sizing: border-box;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none !important;
}

/* Primary CTA Button (Signal Orange) */
.btn-primary {
  background-color: var(--color-action);
  color: #FFFFFF;
  border-color: var(--color-action);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-action-hover);
  border-color: var(--color-action-hover);
  color: #FFFFFF;
}

.btn-primary:active:not(:disabled) {
  background-color: var(--color-action-active);
  border-color: var(--color-action-active);
}

/* Secondary Button (Lime Accent Outline) */
.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--color-brand);
  color: var(--color-brand-dark);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-brand);
  color: var(--color-carbon);
  border-color: var(--color-brand);
}

/* Dark Corporate Button (Carbon) */
.btn-dark {
  background-color: var(--color-carbon);
  color: #FFFFFF;
  border-color: var(--color-carbon);
}

.btn-dark:hover:not(:disabled) {
  background-color: var(--color-graphite);
  border-color: var(--color-graphite);
  color: #FFFFFF;
}

/* Ghost / Soft Button */
.btn-ghost {
  background-color: var(--color-surface-soft);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-ghost:hover:not(:disabled) {
  background-color: #e2e8ec;
  color: var(--color-heading);
}

/* Button Sizes */
.btn-sm {
  padding: 6px 12px;
  font-size: var(--text-caption);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px 24px;
  font-size: var(--text-body);
  border-radius: var(--radius-card);
}

/* --- Badge & Tag System --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  font-size: var(--text-caption);
  font-weight: 600;
  border-radius: var(--radius-pill);
  line-height: 1.2;
}

.badge-brand {
  background-color: var(--color-brand-light);
  color: var(--color-brand-dark);
  border: 1px solid rgba(184, 206, 2, 0.4);
}

.badge-success {
  background-color: var(--color-success-soft);
  color: var(--color-success);
  border: 1px solid rgba(46, 155, 98, 0.25);
}

.badge-warning {
  background-color: var(--color-warning-soft);
  color: var(--color-warning);
  border: 1px solid rgba(231, 162, 26, 0.25);
}

.badge-error {
  background-color: var(--color-error-soft);
  color: var(--color-error);
  border: 1px solid rgba(217, 60, 60, 0.25);
}

.badge-dark {
  background-color: var(--color-carbon);
  color: #FFFFFF;
}

.badge-soft {
  background-color: var(--color-surface-soft);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* --- Form Controls --- */
.form-group {
  margin-bottom: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.form-label {
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--color-heading);
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: var(--text-body-sm);
  color: var(--color-heading);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control::placeholder {
  color: var(--color-placeholder);
}

.form-control:focus {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(184, 206, 2, 0.20);
}

.form-control.is-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(217, 60, 60, 0.15);
}

.form-hint {
  font-size: var(--text-caption);
  color: var(--color-text-muted);
}

.form-error {
  font-size: var(--text-caption);
  color: var(--color-error);
  font-weight: 500;
}

/* Custom Checkbox */
.custom-checkbox {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--text-body-sm);
  user-select: none;
}

.custom-checkbox input[type="checkbox"] {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  cursor: pointer;
  display: grid;
  place-content: center;
  transition: all var(--transition-fast);
}

.custom-checkbox input[type="checkbox"]:checked {
  background-color: var(--color-brand);
  border-color: var(--color-brand);
}

.custom-checkbox input[type="checkbox"]:checked::after {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--color-carbon);
  border-bottom: 2px solid var(--color-carbon);
  transform: rotate(-45deg) translate(1px, -1px);
}

.custom-checkbox input[type="checkbox"]:focus {
  box-shadow: 0 0 0 3px rgba(184, 206, 2, 0.25);
}

/* --- Card Base --- */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: #ccd5dc;
}