/* ============================================
   Design Kit — Mobile App Design System
   ============================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Colors */
  --color-bg: #FFFBF5;
  --color-primary: #F4B960;
  --color-primary-hover: #e5a94d;
  --color-primary-active: #d69a3f;
  --color-btn: #322A07;
  --color-btn-hover: #4a3f0a;
  --color-btn-active: #1f1a04;
  --color-text: #322A07;
  --color-text-muted: rgba(50, 42, 7, 0.7);
  --color-accent-bg: rgba(244, 185, 96, 0.1);
  --color-border: rgba(50, 42, 7, 0.15);
  --color-border-focus: #F4B960;
  --color-white: #ffffff;
  --color-shadow: rgba(50, 42, 7, 0.08);

  /* Typography */
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Font sizes — mobile-first */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;  /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 2rem;      /* 32px */
  --text-4xl: 2.5rem;    /* 40px */

  /* Line heights */
  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.6;

  /* Spacing */
  --space-xs: 0.25rem;   /* 4px */
  --space-sm: 0.5rem;    /* 8px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */

  /* Border radius */
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;

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

/* --- Base styles --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* --- Typography --- */
.dk-heading-1,
h1.dk-heading {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 600;
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}

.dk-heading-2,
h2.dk-heading {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 600;
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}

.dk-heading-3,
h3.dk-heading {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-sm);
  color: var(--color-text);
}

.dk-heading-4,
h4.dk-heading {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-sm);
  color: var(--color-text);
}

.dk-paragraph {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}

.dk-caption {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text-muted);
  margin: 0;
}

/* --- Buttons --- */
.dk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-weight: 500;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base),
    border-color var(--transition-base), transform var(--transition-fast);
}

.dk-btn:active {
  transform: scale(0.98);
}

.dk-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Primary */
.dk-btn-primary {
  background-color: var(--color-btn);
  color: var(--color-bg);
}

.dk-btn-primary:hover:not(:disabled) {
  background-color: var(--color-btn-hover);
}

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

/* Secondary */
.dk-btn-secondary {
  background-color: var(--color-primary);
  color: var(--color-text);
}

.dk-btn-secondary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
}

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

/* Outline */
.dk-btn-outline {
  background-color: transparent;
  color: var(--color-btn);
  border: 2px solid var(--color-btn);
}

.dk-btn-outline:hover:not(:disabled) {
  background-color: rgba(50, 42, 7, 0.08);
}

.dk-btn-outline:active:not(:disabled) {
  background-color: rgba(50, 42, 7, 0.12);
}

/* Sizes */
.dk-btn-sm {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
}

.dk-btn-md {
  padding: var(--space-md) var(--space-lg);
  font-size: var(--text-base);
}

.dk-btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--text-lg);
}

/* --- Forms --- */
.dk-input,
.dk-select,
.dk-textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.dk-input::placeholder,
.dk-textarea::placeholder {
  color: var(--color-text-muted);
}

.dk-input:focus,
.dk-select:focus,
.dk-textarea:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-accent-bg);
}

.dk-input:disabled,
.dk-select:disabled,
.dk-textarea:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.dk-textarea {
  min-height: 100px;
  resize: vertical;
}

.dk-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23322A07' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: 2.5rem;
}

.dk-label {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.dk-form-group {
  margin-bottom: var(--space-md);
}

/* Checkbox */
.dk-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  cursor: pointer;
}

.dk-checkbox input {
  width: 20px;
  height: 20px;
  min-width: 20px;
  margin-top: 2px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.dk-checkbox span {
  font-size: var(--text-sm);
  color: var(--color-text);
}

/* --- Cards --- */
.dk-card {
  background-color: var(--color-white);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: 0 2px 8px var(--color-shadow);
  border: 1px solid var(--color-border);
}

.dk-card-accent {
  background-color: var(--color-accent-bg);
  border: 1px solid rgba(244, 185, 96, 0.3);
}

.dk-card-header {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.dk-card-body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

/* --- Badges --- */
.dk-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.dk-badge-primary {
  background-color: var(--color-primary);
  color: var(--color-text);
}

.dk-badge-outline {
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-primary);
}

.dk-badge-soft {
  background-color: var(--color-accent-bg);
  color: var(--color-text);
}

/* --- Icons --- */
.dk-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: inherit;
}

.dk-icon-sm {
  width: 16px;
  height: 16px;
}

.dk-icon-lg {
  width: 32px;
  height: 32px;
}

/* --- Section layout --- */
.dk-section {
  margin-bottom: var(--space-2xl);
}

.dk-section-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.dk-showcase-grid {
  display: grid;
  gap: var(--space-lg);
}

/* --- Responsive (tablet+) --- */
@media (min-width: 768px) {
  :root {
    --text-3xl: 2.25rem;
    --text-4xl: 3rem;
  }

  .dk-heading-1,
  h1.dk-heading {
    font-size: var(--text-4xl);
  }

  .dk-showcase-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .dk-showcase-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}