/* DropShipAuto Design System
 * TODO: migrate to React when UI complexity requires it
 * Colours, typography, and component tokens sourced from BRANDING.md
 */

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

/* ── Tokens ──────────────────────────────────────────────────────────────── */
:root {
  /* Brand colours (BRANDING.md colour_palette) */
  --color-primary:    #6C63FF;
  --color-secondary:  #A78BFA;
  --color-accent:     #F59E0B;
  --color-background: #0B0918;
  --color-text:       #EDE8FF;

  /* UI surface system */
  --color-surface:        #1E1E2E;
  --color-surface-raised: #2A2A3E;
  --color-border:         rgba(255,255,255,0.08);
  --color-border-strong:  rgba(255,255,255,0.15);

  /* Semantic colours */
  --color-success: #4CAF50;
  --color-warning: #FF9800;
  --color-error:   #F44336;
  --color-info:    #2196F3;
  --color-muted:   #7C7A9E;

  /* Agent status colours */
  --status-idle:     #555566;
  --status-running:  var(--color-accent);
  --status-complete: var(--color-success);
  --status-blocked:  var(--color-error);
  --status-review:   var(--color-warning);

  /* Typography (BRANDING.md) */
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'SF Mono', 'Menlo', 'Consolas', 'Monaco', monospace;

  /* Spacing scale */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  48px;
  --space-2xl: 80px;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.5);
  --shadow-glow-primary: 0 0 24px rgba(108,99,255,0.25);
  --shadow-glow-accent:  0 0 24px rgba(245,158,11,0.25);

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

  /* Layout */
  --header-height: 60px;
  --nav-height:    56px;
  --content-max:   1200px;
  --sidebar-width: 280px;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  background:  var(--color-background);
  color:       var(--color-text);
  font-family: var(--font-body);
  font-size:   16px;
  line-height: 1.5;
  min-height:  100vh;
  -webkit-font-smoothing:  antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-secondary); }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }

/* ── Typography ──────────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family:    var(--font-heading);
  font-weight:    700;
  line-height:    1.2;
  letter-spacing: -0.02em;
  color:          var(--color-text);
}
h1 { font-size: clamp(28px, 4vw, 40px); }
h2 { font-size: clamp(22px, 3vw, 28px); }
h3 { font-size: clamp(18px, 2.5vw, 22px); }
h4 { font-size: 18px; }
h5 { font-size: 16px; }
h6 { font-size: 14px; }

p { line-height: 1.65; }

.text-muted    { color: var(--color-muted); }
.text-accent   { color: var(--color-accent); }
.text-primary  { color: var(--color-primary); }
.text-success  { color: var(--color-success); }
.text-error    { color: var(--color-error); }
.text-warning  { color: var(--color-warning); }
.text-sm       { font-size: 13px; }
.text-xs       { font-size: 11px; }
.text-lg       { font-size: 18px; }
.font-heading  { font-family: var(--font-heading); }
.font-mono     { font-family: var(--font-mono); }
.font-bold     { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium   { font-weight: 500; }
.uppercase     { text-transform: uppercase; letter-spacing: 0.06em; }

/* ── Layout ──────────────────────────────────────────────────────────────── */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
@media (max-width: 600px) {
  .container { padding: 0 var(--space-md); }
}

.stack      { display: flex; flex-direction: column; }
.row        { display: flex; flex-direction: row; align-items: center; }
.row-wrap   { display: flex; flex-direction: row; flex-wrap: wrap; align-items: center; }
.gap-xs     { gap: var(--space-xs); }
.gap-sm     { gap: var(--space-sm); }
.gap-md     { gap: var(--space-md); }
.gap-lg     { gap: var(--space-lg); }

/* ── Header ──────────────────────────────────────────────────────────────── */
.app-header {
  height:          var(--header-height);
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  padding:         0 var(--space-lg);
  background:      var(--color-surface);
  border-bottom:   1px solid var(--color-border);
  position:        sticky;
  top:             0;
  z-index:         100;
  gap:             var(--space-md);
}

.app-logo {
  font-family:    var(--font-heading);
  font-size:      20px;
  font-weight:    700;
  color:          var(--color-text);
  letter-spacing: -0.03em;
  white-space:    nowrap;
  display:        flex;
  align-items:    center;
  gap:            6px;
}
.app-logo .accent { color: var(--color-primary); }

.app-nav {
  display:    flex;
  align-items: center;
  gap:         var(--space-xs);
}

.nav-link {
  font-size:      14px;
  font-weight:    500;
  color:          var(--color-muted);
  padding:        6px 12px;
  border-radius:  var(--radius-sm);
  transition:     color var(--transition-fast), background var(--transition-fast);
  white-space:    nowrap;
}
.nav-link:hover  { color: var(--color-text); background: var(--color-surface-raised); }
.nav-link.active { color: var(--color-primary); background: rgba(108,99,255,0.1); }

.app-user {
  display:     flex;
  align-items: center;
  gap:         var(--space-sm);
  position:    relative;
}

/* ── Hamburger (mobile) ──────────────────────────────────────────────────── */
.hamburger {
  display:         none;
  width:           40px;
  height:          40px;
  align-items:     center;
  justify-content: center;
  background:      none;
  border:          1px solid var(--color-border);
  border-radius:   var(--radius-sm);
  color:           var(--color-text);
}
@media (max-width: 768px) {
  .hamburger      { display: flex; }
  .app-nav        { display: none; }
  .app-nav.open   {
    display:        flex;
    flex-direction: column;
    position:       fixed;
    top:            var(--header-height);
    left:           0;
    right:          0;
    background:     var(--color-surface);
    border-bottom:  1px solid var(--color-border);
    padding:        var(--space-md);
    z-index:        99;
  }
  .app-nav.open .nav-link { padding: 12px 16px; font-size: 16px; }
}

/* ── User dropdown ───────────────────────────────────────────────────────── */
.user-btn {
  display:         flex;
  align-items:     center;
  gap:             var(--space-sm);
  background:      none;
  border:          1px solid var(--color-border);
  border-radius:   var(--radius-full);
  padding:         5px 12px 5px 5px;
  color:           var(--color-text);
  font-size:       14px;
  transition:      border-color var(--transition-fast);
  white-space:     nowrap;
}
.user-btn:hover { border-color: var(--color-border-strong); }

.user-avatar {
  width:           28px;
  height:          28px;
  border-radius:   50%;
  background:      var(--color-primary);
  display:         flex;
  align-items:     center;
  justify-content: center;
  font-size:       12px;
  font-weight:     700;
  color:           #fff;
  flex-shrink:     0;
}

.dropdown-menu {
  position:      absolute;
  top:           calc(100% + 8px);
  right:         0;
  background:    var(--color-surface);
  border:        1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding:       var(--space-xs);
  min-width:     160px;
  box-shadow:    var(--shadow-md);
  z-index:       200;
}
.dropdown-item {
  display:        block;
  padding:        10px 14px;
  font-size:      14px;
  color:          var(--color-text);
  border-radius:  var(--radius-sm);
  transition:     background var(--transition-fast);
  width:          100%;
  text-align:     left;
  background:     none;
  border:         none;
}
.dropdown-item:hover { background: var(--color-surface-raised); }
.dropdown-item.danger { color: var(--color-error); }

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card {
  background:    var(--color-surface);
  border:        1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding:       var(--space-lg);
}
.card-sm { padding: var(--space-md); }
.card-raised {
  background:    var(--color-surface-raised);
  border:        1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding:       var(--space-md);
}
.card-highlight {
  border-color: var(--color-primary);
  box-shadow:   var(--shadow-glow-primary);
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display:         inline-flex;
  align-items:     center;
  justify-content: center;
  gap:             var(--space-sm);
  border:          none;
  border-radius:   var(--radius-sm);
  font-weight:     600;
  font-size:       14px;
  padding:         10px 18px;
  min-height:      44px;
  transition:      background var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
  white-space:     nowrap;
  cursor:          pointer;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; }

.btn-primary   { background: var(--color-primary);   color: #fff; }
.btn-primary:hover:not(:disabled)   { background: #5B52EE; }
.btn-secondary { background: var(--color-surface-raised); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover:not(:disabled) { border-color: var(--color-border-strong); }
.btn-ghost     { background: transparent; color: var(--color-muted); border: 1px solid var(--color-border); }
.btn-ghost:hover:not(:disabled)     { color: var(--color-text); border-color: var(--color-border-strong); }
.btn-danger    { background: var(--color-error); color: #fff; }
.btn-danger:hover:not(:disabled)    { background: #D32F2F; }
.btn-success   { background: var(--color-success); color: #fff; }
.btn-success:hover:not(:disabled)   { background: #388E3C; }
.btn-warning   { background: var(--color-warning); color: #fff; }
.btn-warning:hover:not(:disabled)   { background: #F57C00; }

.btn-lg { font-size: 16px; padding: 14px 28px; min-height: 52px; }
.btn-sm { font-size: 12px; padding: 6px 12px; min-height: 32px; }
.btn-full { width: 100%; }
.btn-icon { width: 44px; height: 44px; padding: 0; border-radius: var(--radius-sm); }

/* ── Forms ───────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: var(--space-md); }

.form-label {
  display:        block;
  font-size:      12px;
  font-weight:    600;
  color:          var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom:  var(--space-xs);
}

.form-input,
.form-select,
.form-textarea {
  width:            100%;
  background:       var(--color-background);
  border:           1px solid var(--color-border);
  border-radius:    var(--radius-sm);
  color:            var(--color-text);
  font-size:        16px;
  padding:          10px 14px;
  outline:          none;
  transition:       border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow:   0 0 0 3px rgba(108,99,255,0.15);
}
.form-input::placeholder { color: var(--color-muted); opacity: 0.6; }
.form-select option { background: var(--color-surface); color: var(--color-text); }
.form-textarea { resize: vertical; min-height: 100px; line-height: 1.6; }

.form-range {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: var(--color-surface-raised);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}
.form-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--transition-fast);
}
.form-range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--color-primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
}

.toggle-wrapper {
  display:     flex;
  align-items: center;
  gap:         var(--space-sm);
  cursor:      pointer;
}
.toggle {
  position: relative;
  width:    44px;
  height:   24px;
  flex-shrink: 0;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-track {
  position:       absolute;
  inset:          0;
  background:     var(--color-surface-raised);
  border:         1px solid var(--color-border);
  border-radius:  var(--radius-full);
  transition:     background var(--transition-fast), border-color var(--transition-fast);
}
.toggle input:checked + .toggle-track {
  background:    var(--color-primary);
  border-color:  var(--color-primary);
}
.toggle-thumb {
  position:   absolute;
  top:        3px;
  left:       3px;
  width:      16px;
  height:     16px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition-fast);
  pointer-events: none;
}
.toggle input:checked ~ .toggle-thumb { transform: translateX(20px); }

.form-error {
  font-size:     13px;
  color:         var(--color-error);
  margin-top:    var(--space-xs);
}

.alert {
  padding:       12px 16px;
  border-radius: var(--radius-sm);
  font-size:     14px;
  border:        1px solid transparent;
  display:       flex;
  align-items:   flex-start;
  gap:           var(--space-sm);
  line-height:   1.5;
}
.alert-error {
  background:  rgba(244,67,54,0.1);
  border-color: rgba(244,67,54,0.25);
  color:       #FF6B6B;
}
.alert-success {
  background:  rgba(76,175,80,0.1);
  border-color: rgba(76,175,80,0.25);
  color:       #81C784;
}
.alert-warning {
  background:  rgba(255,152,0,0.1);
  border-color: rgba(255,152,0,0.25);
  color:       #FFB74D;
}
.alert-info {
  background:  rgba(33,150,243,0.1);
  border-color: rgba(33,150,243,0.25);
  color:       #64B5F6;
}

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badge {
  display:        inline-flex;
  align-items:    center;
  gap:            4px;
  font-size:      11px;
  font-weight:    700;
  padding:        3px 9px;
  border-radius:  var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space:    nowrap;
}
.badge-idle     { background: rgba(85,85,102,0.2);  color: var(--status-idle); }
.badge-running  { background: rgba(255,152,0,0.15); color: var(--color-warning); }
.badge-complete { background: rgba(76,175,80,0.15); color: var(--color-success); }
.badge-blocked  { background: rgba(244,67,54,0.15); color: var(--color-error); }
.badge-review   { background: rgba(255,152,0,0.15); color: var(--color-warning); }
.badge-primary  { background: rgba(108,99,255,0.15); color: var(--color-primary); }
.badge-accent   { background: rgba(245,158,11,0.15); color: var(--color-accent); }

/* Status dot */
.status-dot {
  width:         8px;
  height:        8px;
  border-radius: 50%;
  flex-shrink:   0;
  background:    var(--status-idle);
  transition:    background var(--transition-fast);
}
.status-dot.running  { background: var(--status-running);  animation: pulse-dot 1.2s ease-in-out infinite; }
.status-dot.complete { background: var(--status-complete); }
.status-dot.blocked  { background: var(--status-blocked); }
.status-dot.review   { background: var(--status-review);   animation: pulse-dot 1.8s ease-in-out infinite; }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.75); }
}

/* ── Progress bars ───────────────────────────────────────────────────────── */
.progress-track {
  height:        6px;
  background:    var(--color-surface-raised);
  border-radius: var(--radius-full);
  overflow:      hidden;
}
.progress-fill {
  height:        100%;
  border-radius: var(--radius-full);
  background:    var(--color-primary);
  transition:    width 0.4s ease;
}
.progress-fill.accent   { background: var(--color-accent); }
.progress-fill.success  { background: var(--color-success); }
.progress-fill.animated { animation: shimmer 2s linear infinite; }

@keyframes shimmer {
  0%   { background-position: -200px 0; }
  100% { background-position: calc(200px + 100%) 0; }
}

.progress-lg .progress-track { height: 10px; border-radius: 5px; }

/* ── Tables ──────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

table {
  width:           100%;
  border-collapse: collapse;
  font-size:       14px;
}
th {
  font-size:      11px;
  font-weight:    700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color:          var(--color-muted);
  padding:        10px 14px;
  text-align:     left;
  border-bottom:  1px solid var(--color-border);
  white-space:    nowrap;
}
td {
  padding:        12px 14px;
  border-bottom:  1px solid var(--color-border);
  color:          var(--color-text);
  vertical-align: top;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--color-surface-raised); }
.tr-clickable { cursor: pointer; }

/* ── Tabs ─────────────────────────────────────────────────────────────────── */
.tab-bar {
  display:          flex;
  gap:              2px;
  border-bottom:    1px solid var(--color-border);
  overflow-x:       auto;
  scrollbar-width:  none;
  -webkit-overflow-scrolling: touch;
}
.tab-bar::-webkit-scrollbar { display: none; }
.tab-btn {
  background:    none;
  border:        none;
  border-bottom: 2px solid transparent;
  color:         var(--color-muted);
  font-size:     14px;
  font-weight:   600;
  padding:       10px 16px;
  white-space:   nowrap;
  transition:    color var(--transition-fast), border-color var(--transition-fast);
  margin-bottom: -1px;
  flex-shrink:   0;
}
.tab-btn:hover  { color: var(--color-text); }
.tab-btn.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }

/* ── Empty states ─────────────────────────────────────────────────────────── */
.empty-state {
  text-align:  center;
  padding:     var(--space-xl) var(--space-lg);
  color:       var(--color-muted);
}
.empty-state-icon { font-size: 48px; margin-bottom: var(--space-md); opacity: 0.5; }
.empty-state h3   { color: var(--color-text); margin-bottom: var(--space-sm); font-size: 18px; }
.empty-state p    { font-size: 14px; line-height: 1.6; max-width: 360px; margin: 0 auto; }

/* ── Misc utilities ──────────────────────────────────────────────────────── */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cursor-pointer { cursor: pointer; }
[x-cloak] { display: none !important; }