/* =============================================
   DoveQR — Stylesheet
   ============================================= */

:root {
  --primary:        #6366F1;
  --primary-dark:   #4F46E5;
  --primary-hover:  #5254CC;
  --primary-alpha:  rgba(99, 102, 241, 0.12);
  --primary-subtle: #F5F3FF;
  --primary-light:  #EEF2FF;

  --bg:       #F7F8FC;
  --surface:  #FFFFFF;
  --surface2: #F3F4F6;
  --border:   #E5E7EB;
  --border2:  #D1D5DB;

  --text1: #111827;
  --text2: #374151;
  --text3: #6B7280;
  --text4: #9CA3AF;

  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 8px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 28px -4px rgba(0,0,0,0.10), 0 4px 8px -2px rgba(0,0,0,0.05);

  --r-sm:   6px;
  --r-md:   10px;
  --r-lg:   16px;
  --r-xl:   22px;
  --r-full: 9999px;

  --ease: 0.18s ease;
}

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

html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text2);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== HEADER ===== */
.header {
  background: linear-gradient(130deg, #4338CA 0%, #6366F1 55%, #7C3AED 100%);
  box-shadow: 0 2px 20px rgba(79,70,229,0.4);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-icon { flex-shrink: 0; }

.brand-name {
  font-size: 1.45rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.03em;
}

.brand-tagline {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.65);
  padding-left: 20px;
  border-left: 1px solid rgba(255,255,255,0.25);
}

/* ===== CONTAINER ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ===== MAIN ===== */
.main { flex: 1; padding: 28px 0 60px; }

.layout {
  display: grid;
  grid-template-columns: 370px 1fr;
  gap: 22px;
  align-items: start;
}

/* ===== PANELS ===== */
.controls-panel,
.preview-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ===== CONTROL CARDS ===== */
.control-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}

.section-title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

/* ===== URL INPUT ===== */
.url-field {
  position: relative;
  display: flex;
  align-items: center;
}

.url-input {
  width: 100%;
  height: 44px;
  padding: 0 42px 0 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--text1);
  background: var(--bg);
  transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
  outline: none;
}

.url-input::placeholder { color: var(--text4); }

.url-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-alpha);
  background: var(--surface);
}

.url-clear {
  position: absolute;
  right: 11px;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text4);
  border-radius: var(--r-sm);
  transition: color var(--ease), background var(--ease);
}

.url-clear:hover { color: var(--text2); background: var(--surface2); }

/* ===== COLORS ===== */
.colors-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.color-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  flex-shrink: 0;
}

.color-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.color-label {
  font-size: 0.8rem;
  color: var(--text3);
  font-weight: 500;
}

.color-swatch-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg);
  cursor: pointer;
  transition: border-color var(--ease);
  overflow: hidden;
}

.color-swatch-btn:hover { border-color: var(--primary); }

.color-swatch-btn input[type="color"] {
  width: 26px;
  height: 26px;
  border: none;
  background: none;
  padding: 0;
  cursor: pointer;
  border-radius: 5px;
  -webkit-appearance: none;
  flex-shrink: 0;
}

.color-swatch-btn input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-swatch-btn input[type="color"]::-webkit-color-swatch {
  border: 1.5px solid rgba(0,0,0,0.12);
  border-radius: 5px;
}

.color-hex {
  font-size: 0.8125rem;
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', monospace;
  color: var(--text2);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ===== SHAPE GRID ===== */
.shape-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.shape-opt {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding: 10px 6px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  cursor: pointer;
  background: var(--bg);
  transition: border-color var(--ease), background var(--ease), box-shadow var(--ease);
  user-select: none;
}

.shape-opt:hover { border-color: var(--primary); background: var(--primary-subtle); }

.shape-opt.selected {
  border-color: var(--primary);
  background: var(--primary-light);
  box-shadow: 0 0 0 3px var(--primary-alpha);
}

/* Mini dot-grid preview */
.dot-preview {
  width: 36px;
  height: 36px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
}

.dot-preview span {
  background: var(--text3);
  transition: background var(--ease), border-radius var(--ease);
}

.shape-opt.selected .dot-preview span { background: var(--primary); }

/* Shape-specific border-radius */
.dot-preview.square span  { border-radius: 1px; }
.dot-preview.dots span    { border-radius: 50%; }
.dot-preview.rounded span { border-radius: 4px; }
.dot-preview.smooth span  { border-radius: 8px; }

.shape-name {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text3);
}

.shape-opt.selected .shape-name { color: var(--primary); }

/* ===== INFO TOOLTIP ===== */
.info-tip {
  position: relative;
  display: inline-flex;
  align-items: center;
  margin-left: auto;
  outline: none;
}

.info-icon {
  width: 14px;
  height: 14px;
  color: var(--text4);
  cursor: help;
  transition: color var(--ease);
  flex-shrink: 0;
}

.info-tip:hover .info-icon,
.info-tip:focus-visible .info-icon { color: var(--primary); }

.tip-bubble {
  position: absolute;
  bottom: calc(100% + 10px);
  right: -6px;
  background: var(--text1);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: 0;
  text-transform: none;
  padding: 10px 13px;
  border-radius: var(--r-md);
  width: 240px;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--ease);
  z-index: 30;
  box-shadow: var(--shadow-lg);
}

.tip-bubble::after {
  content: '';
  position: absolute;
  top: 100%;
  right: 12px;
  border: 5px solid transparent;
  border-top-color: var(--text1);
}

.info-tip:hover .tip-bubble,
.info-tip:focus-visible .tip-bubble { opacity: 1; }

/* ===== DOMAIN WARNING ===== */
.domain-warn {
  display: none;
  align-items: flex-start;
  gap: 7px;
  margin-top: 10px;
  padding: 9px 12px;
  background: #FFFBEB;
  border: 1px solid #FCD34D;
  border-radius: var(--r-md);
  font-size: 0.8rem;
  color: #78350F;
  line-height: 1.5;
}

.domain-warn.visible { display: flex; }

.domain-warn svg {
  flex-shrink: 0;
  margin-top: 1px;
  color: #B45309;
}

.domain-warn strong { font-weight: 600; }

/* ===== ICON GRID ===== */
.icon-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.icon-opt {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 10px 6px 8px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  cursor: pointer;
  background: var(--bg);
  transition: border-color var(--ease), background var(--ease), box-shadow var(--ease);
  user-select: none;
  min-width: 0;
}

.icon-opt:hover { border-color: var(--primary); background: var(--primary-subtle); }

.icon-opt.selected {
  border-color: var(--primary);
  background: var(--primary-light);
  box-shadow: 0 0 0 3px var(--primary-alpha);
}

.icon-opt img {
  width: 22px;
  height: 22px;
  display: block;
}

.icon-opt-name {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text3);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
}

.icon-opt.selected .icon-opt-name { color: var(--primary); }

/* ===== QR PREVIEW CARD ===== */
.qr-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 32px 32px 24px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}

.qr-canvas-wrap {
  width: 300px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-canvas-wrap canvas,
.qr-canvas-wrap svg {
  border-radius: var(--r-md);
  display: block;
}

.qr-actions {
  display: flex;
  gap: 10px;
  width: 100%;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 44px;
  padding: 0 20px;
  border: none;
  border-radius: var(--r-md);
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--ease), box-shadow var(--ease), transform 0.1s ease, color var(--ease);
  outline: none;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--primary);
  color: #fff;
  flex: 1;
  box-shadow: 0 2px 10px rgba(99,102,241,0.4);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 4px 14px rgba(99,102,241,0.5);
}

.btn-primary.downloaded {
  background: #059669;
  box-shadow: 0 2px 10px rgba(5,150,105,0.4);
}

.btn-ghost {
  background: var(--surface2);
  color: var(--text2);
  border: 1.5px solid var(--border);
  flex: 0 0 auto;
  padding: 0 16px;
}

.btn-ghost:hover { background: var(--border); color: var(--text1); }

.btn-text {
  background: none;
  border: none;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text3);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--r-sm);
  transition: color var(--ease), background var(--ease);
  font-family: inherit;
}

.btn-text:hover { color: var(--text1); background: var(--surface2); }

/* ===== HISTORY CARD ===== */
.history-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}

.history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.history-empty {
  text-align: center;
  color: var(--text4);
  font-size: 0.875rem;
  padding: 18px 0;
  line-height: 1.65;
}

.history-empty small { font-size: 0.75rem; opacity: 0.7; }

.history-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--r-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--ease), border-color var(--ease);
}

.history-item:hover { background: var(--surface2); border-color: var(--border); }

.history-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 1.5px solid var(--border2);
  flex-shrink: 0;
}

.history-url {
  flex: 1;
  font-size: 0.875rem;
  color: var(--text2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-time {
  font-size: 0.75rem;
  color: var(--text4);
  white-space: nowrap;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 18px 0;
}

.footer p {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text4);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 920px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .preview-panel { order: -1; }

  .qr-card { padding: 24px; }
}

@media (max-width: 580px) {
  .container { padding: 0 16px; }
  .main { padding: 16px 0 48px; }
  .brand-tagline { display: none; }

  .shape-grid { grid-template-columns: repeat(4, 1fr); }

  .qr-canvas-wrap { width: 260px; height: 260px; }

  .btn-ghost span { display: none; }
}