/* ==========================================================================
   Friend Shield - Clean & Professional Light Theme + Mobile Responsive PWA
   ========================================================================== */

:root {
  --bg-app: #f8fafc;
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  --bg-muted: #f1f5f9;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-dim: #94a3b8;
  
  --border-light: #e2e8f0;
  --border-focus: #3b82f6;
  
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  
  /* Semantic Status Colors (Light Palette) */
  --safe-bg: #ecfdf5;
  --safe-border: #a7f3d0;
  --safe-text: #065f46;
  --safe-pill: #10b981;

  --warn-bg: #fffbeb;
  --warn-border: #fde68a;
  --warn-text: #92400e;
  --warn-pill: #f59e0b;

  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --danger-text: #991b1b;
  --danger-pill: #ef4444;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.07), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
}

/* Force browser respect for hidden attribute */
[hidden] {
  display: none !important;
}

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

body {
  font-family: 'Inter', 'Hind Siliguri', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-bottom: env(safe-area-inset-bottom, 20px);
}

.app-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 20px 48px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ================= Header ================= */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  font-size: 2.2rem;
  line-height: 1;
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-bn {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary);
  background-color: var(--primary-light);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.brand-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

/* Install App Button */
.btn-install {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 7px 14px;
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-install:hover {
  background-color: #dbeafe;
  transform: translateY(-1px);
}

/* API Status Indicator */
.api-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 12px;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #cbd5e1;
}

.status-dot.online {
  background-color: #10b981;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.status-dot.offline {
  background-color: #ef4444;
}

/* ================= Cards ================= */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
  margin-bottom: 24px;
}

.card-intro h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.card-intro p {
  font-size: 0.92rem;
  color: var(--text-muted);
}

/* ================= Presets ================= */
.presets-row {
  margin-top: 18px;
  margin-bottom: 16px;
}

.presets-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.preset-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 14px;
  background: var(--bg-muted);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  color: var(--text-main);
  cursor: pointer;
  min-height: 38px;
  touch-action: manipulation;
  transition: all 0.15s ease;
}

.pill-btn .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

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

.pill-btn.success .dot {
  background-color: var(--safe-pill);
}

.pill-btn:hover {
  background-color: #e2e8f0;
  border-color: #cbd5e1;
  transform: translateY(-1px);
}

/* ================= Form & Input ================= */
.input-wrap {
  position: relative;
  margin-bottom: 14px;
}

textarea {
  width: 100%;
  font-family: inherit;
  font-size: 1rem; /* 16px prevents mobile iOS auto-zoom */
  line-height: 1.5;
  color: var(--text-main);
  background-color: var(--bg-input);
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  padding: 14px 40px 14px 14px;
  resize: vertical;
  min-height: 110px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

textarea::placeholder {
  color: var(--text-dim);
}

.btn-clear {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 28px;
  height: 28px;
  border: none;
  background: #f1f5f9;
  color: var(--text-muted);
  border-radius: 50%;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.btn-clear:hover {
  background: #e2e8f0;
  color: var(--text-main);
}

.form-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.shortcut-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

kbd {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  padding: 2px 6px;
  font-family: monospace;
  font-size: 0.75rem;
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
  background-color: var(--primary);
  border: none;
  border-radius: var(--radius-md);
  padding: 12px 24px;
  min-height: 44px; /* Optimal mobile touch target */
  cursor: pointer;
  transition: background-color 0.15s, transform 0.1s;
}

.btn-submit:hover:not(:disabled) {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-submit:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ================= Results Section ================= */
.results-card {
  padding: 28px;
}

/* Top Verdict Card */
.verdict-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  margin-bottom: 24px;
  background-color: var(--bg-muted);
  transition: all 0.2s ease;
}

.verdict-card.safe {
  background-color: var(--safe-bg);
  border-color: var(--safe-border);
  color: var(--safe-text);
}

.verdict-card.warning {
  background-color: var(--warn-bg);
  border-color: var(--warn-border);
  color: var(--warn-text);
}

.verdict-card.danger {
  background-color: var(--danger-bg);
  border-color: var(--danger-border);
  color: var(--danger-text);
}

.verdict-icon {
  font-size: 2.2rem;
  line-height: 1;
  flex-shrink: 0;
}

.verdict-body {
  flex: 1;
}

.verdict-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.verdict-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.verdict-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.07);
}

.verdict-desc {
  font-size: 0.9rem;
  opacity: 0.9;
}

/* ================= AI Advice Card ================= */
.ai-card {
  background-color: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.ai-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 16px;
}

.ai-heading {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ai-heading h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
}

/* Progressive Gemma AI Indicator Styles */
.ai-generating-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  color: #6366f1;
  font-weight: 600;
  background: #eef2ff;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.ai-pulse-dot {
  width: 7px;
  height: 7px;
  background-color: #6366f1;
  border-radius: 50%;
  display: inline-block;
  animation: pulse-dot 1.2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0% { transform: scale(0.85); opacity: 0.5; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.85); opacity: 0.5; }
}

.ai-ready-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  color: #047857;
  font-weight: 600;
  background: #ecfdf5;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.ai-updated-glow {
  animation: glow-card 1.5s ease-out;
}

@keyframes glow-card {
  0% { box-shadow: 0 0 0 2px #6366f1, 0 4px 12px rgba(99, 102, 241, 0.2); }
  100% { box-shadow: none; }
}

/* Segmented Language Switcher Tabs */
.lang-tabs {
  display: flex;
  background-color: var(--bg-muted);
  border-radius: var(--radius-sm);
  padding: 3px;
  gap: 2px;
}

.lang-tab {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  min-height: 34px;
  transition: all 0.15s ease;
}

.lang-tab.active {
  background-color: #ffffff;
  color: var(--primary);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

.ai-summary-callout {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  background-color: var(--bg-muted);
  padding: 12px 14px;
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 14px;
}

.ai-points-list {
  font-size: 0.92rem;
  color: #334155;
  line-height: 1.6;
  margin-bottom: 16px;
}

.action-box {
  padding: 14px 16px;
  background-color: #f8fafc;
  border: 1px dashed #cbd5e1;
  border-radius: var(--radius-sm);
}

.action-box.danger {
  background-color: #fef2f2;
  border-color: #fca5a5;
}

.action-label {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-main);
  margin-bottom: 6px;
}

.action-text {
  font-size: 0.92rem;
  font-weight: 500;
  color: #1e293b;
  line-height: 1.5;
}

/* ================= Simple Links List ================= */
.links-box {
  border-top: 1px solid var(--border-light);
  padding-top: 20px;
}

.links-heading {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.links-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.link-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 12px 14px;
  background-color: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
}

.link-url-group {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 75%;
  word-break: break-all;
}

.url-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.url-link:hover {
  text-decoration: underline;
}

.link-badges {
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.badge.safe {
  background-color: var(--safe-bg);
  color: var(--safe-text);
  border: 1px solid var(--safe-border);
}

.badge.warning {
  background-color: var(--warn-bg);
  color: var(--warn-text);
  border: 1px solid var(--warn-border);
}

.badge.danger {
  background-color: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid var(--danger-border);
}

/* ================= Dynamic Toast Alerts (Auto-dismissing) ================= */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
  width: 90%;
  max-width: 440px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: #1e293b;
  color: #ffffff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  pointer-events: auto;
  animation: slideUp 0.25s ease-out;
}

.toast.error {
  background: #991b1b;
  color: #fef2f2;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================= Footer ================= */
.footer {
  margin-top: auto;
  text-align: center;
  padding-top: 24px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ================= Mobile & Responsive Optimizations ================= */
@media (max-width: 640px) {
  .app-container {
    padding: 16px 14px 28px;
  }

  .header {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .brand {
    justify-content: flex-start;
  }

  .header-actions {
    justify-content: space-between;
    width: 100%;
  }

  .card {
    padding: 20px 16px;
    border-radius: var(--radius-md);
  }

  .presets-row {
    margin-top: 14px;
  }

  .preset-pills {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .pill-btn {
    justify-content: center;
    padding: 8px 10px;
    font-size: 0.8rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .form-bottom {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .shortcut-hint {
    display: none; /* Shortcuts not needed on touch keyboards */
  }

  .btn-submit {
    width: 100%;
    padding: 14px;
  }

  .verdict-card {
    flex-direction: column;
    text-align: center;
    padding: 18px 14px;
  }

  .verdict-top {
    justify-content: center;
    flex-wrap: wrap;
  }

  .ai-card-header {
    flex-direction: column;
    align-items: stretch;
  }

  .lang-tabs {
    width: 100%;
  }

  .lang-tab {
    flex: 1;
    text-align: center;
    padding: 8px 6px;
  }

  .link-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .link-url-group {
    max-width: 100%;
  }

  .link-badges {
    align-self: flex-start;
  }
}

@media (max-width: 380px) {
  .preset-pills {
    grid-template-columns: 1fr;
  }
}

/* ================= Media Upload (QR & Screenshot OCR) ================= */
.media-upload-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
  padding: 10px 14px;
  background-color: var(--bg-app);
  border: 1px dashed var(--border-light);
  border-radius: var(--radius-sm);
}

.btn-media-upload {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background-color: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.btn-media-upload:hover {
  background-color: var(--primary-light);
  border-color: var(--primary);
  transform: translateY(-1px);
}

.paste-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Image Preview Strip */
.image-preview-card {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  padding: 8px 12px;
  background-color: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  animation: fadeIn 0.2s ease-in-out;
}

.preview-thumb-wrap {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-light);
  background-color: #e2e8f0;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-info {
  flex: 1;
  min-width: 0;
}

.preview-filename {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.preview-status {
  font-size: 0.78rem;
  color: var(--primary);
  margin-top: 2px;
  font-weight: 500;
}

.btn-preview-remove {
  background: transparent;
  border: none;
  color: var(--text-muted);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: all 0.15s ease;
}

.btn-preview-remove:hover {
  background-color: #e2e8f0;
  color: var(--danger-pill);
}

.media-scan-status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  padding: 10px 14px;
  background-color: var(--primary-light);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--primary-hover);
  font-weight: 500;
}

.spinner-small {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(37, 99, 235, 0.3);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
  flex-shrink: 0;
}

/* ================= Social Engineering Manipulation Index (SEMI) Card ================= */
.semi-card {
  margin-top: 18px;
  background-color: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.semi-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.semi-title-wrap {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.semi-icon {
  font-size: 1.4rem;
  line-height: 1.2;
}

.semi-title-wrap h4 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}

.semi-subtitle {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.semi-badge {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.semi-badge.minimal {
  background-color: var(--safe-bg);
  color: var(--safe-text);
  border: 1px solid var(--safe-border);
}

.semi-badge.moderate {
  background-color: var(--warn-bg);
  color: var(--warn-text);
  border: 1px solid var(--warn-border);
}

.semi-badge.high,
.semi-badge.critical {
  background-color: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid var(--danger-border);
}

.semi-meter-wrap {
  width: 100%;
  height: 8px;
  background-color: #e2e8f0;
  border-radius: 9999px;
  overflow: hidden;
}

.semi-meter-bar {
  height: 100%;
  border-radius: 9999px;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  background: linear-gradient(90deg, #10b981 0%, #f59e0b 60%, #ef4444 100%);
}

.semi-vectors {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.semi-vector-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  background-color: #f8fafc;
  border: 1px solid var(--border-light);
  color: var(--text-main);
}

.semi-vector-pill.urgency {
  background-color: #fff1f2;
  border-color: #fecdd3;
  color: #be123c;
}

.semi-vector-pill.financialBait {
  background-color: #fefce8;
  border-color: #fef08a;
  color: #a16207;
}

.semi-vector-pill.authorityImpersonation {
  background-color: #f0fdf4;
  border-color: #bbf7d0;
  color: #15803d;
}

.semi-vector-pill.credentialCoercion {
  background-color: #fef2f2;
  border-color: #fca5a5;
  color: #b91c1c;
}