/* =============================================================
   MY RECEIPT ASSISTANT – BASE CSS
   Design tokens, reset, typography, utilities
   ============================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  /* Colours */
  --color-bg:            #060f1e;
  --color-bg-secondary:  #0a1628;
  --color-sidebar:       #071020;
  --color-card:          #f5f5f5;
  --color-card-inner:    #ffffff;
  --color-surface:       #eeeeee;

  --color-primary:       #e87722;
  --color-primary-hover: #d06518;
  --color-primary-light: rgba(232, 119, 34, 0.12);

  --color-text-dark:     #1a1a1a;
  --color-text-body:     #333333;
  --color-text-muted:    #666666;
  --color-text-faint:    #999999;
  --color-text-white:    #ffffff;

  --color-border:        #dddddd;
  --color-border-light:  #eeeeee;

  --color-danger:        #e53e3e;
  --color-danger-hover:  #c53030;
  --color-success:       #38a169;

  /* Sidebar specifics */
  --sidebar-width:       240px;
  --sidebar-collapsed:   64px;

  /* Spacing */
  --space-xs:   4px;
  --space-sm:   8px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   32px;
  --space-2xl:  48px;

  /* Border radius */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.12);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.18);
  --shadow-xl:  0 16px 48px rgba(0,0,0,0.24);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs:   11px;
  --font-size-sm:   12px;
  --font-size-base: 14px;
  --font-size-md:   15px;
  --font-size-lg:   16px;
  --font-size-xl:   18px;
  --font-size-2xl:  22px;
  --font-size-3xl:  28px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text-body);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

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

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

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

ul, ol {
  list-style: none;
}

/* ── Typography ────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text-dark);
}

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

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

::-webkit-scrollbar-thumb {
  background: #cccccc;
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: #aaaaaa;
}

/* ── Common Form Elements ──────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-dark);
  letter-spacing: 0.02em;
}

.form-input {
  width: 100%;
  padding: 10px var(--space-md);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-card-inner);
  font-size: var(--font-size-base);
  color: var(--color-text-body);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-input::placeholder {
  color: var(--color-text-faint);
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 11px var(--space-xl);
  border-radius: var(--radius-full);
  font-size: var(--font-size-base);
  font-weight: 600;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-white);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 16px rgba(232, 119, 34, 0.35);
}

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

.btn-danger:hover {
  background: var(--color-danger-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1.5px solid var(--color-border);
}

.btn-ghost:hover {
  background: var(--color-surface);
  border-color: #cccccc;
}

.btn-full {
  width: 100%;
}

.btn-sm {
  padding: 7px var(--space-md);
  font-size: var(--font-size-sm);
}

/* ── Icon Button ───────────────────────────────────────────── */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
  color: var(--color-text-muted);
}

.icon-btn:hover {
  background: var(--color-surface);
  color: var(--color-text-dark);
}

.icon-btn.danger:hover {
  background: rgba(229, 62, 62, 0.1);
  color: var(--color-danger);
}

.icon-btn.primary:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* ── Badge ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.03em;
}

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

.badge-success {
  background: rgba(56, 161, 105, 0.12);
  color: var(--color-success);
}

/* ── Utilities ─────────────────────────────────────────────── */
.text-muted   { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-danger  { color: var(--color-danger); }
.text-sm      { font-size: var(--font-size-sm); }
.text-xs      { font-size: var(--font-size-xs); }
.text-bold    { font-weight: 700; }
.text-semibold { font-weight: 600; }
.text-right   { text-align: right; }
.text-center  { text-align: center; }

.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm       { gap: var(--space-sm); }
.gap-md       { gap: var(--space-md); }

.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;
}

/* ── Component utility overrides ───────────────────────────── */
.chevron-icon {
  color: rgba(255,255,255,0.4);
  flex-shrink: 0;
}

.table-toolbar--spaced {
  margin-bottom: var(--space-lg);
}

.search-bar-wrapper--grow {
  flex: 1;
}

.empty-state--hidden {
  display: none;
}