/* ==========================================================
   style.css — হালকা ও গাঢ়ো দুই থিম সমর্থন করে
   ========================================================== */

:root {
  --bg: #f1f5f9;
  --header-bg: #0f172a;
  --header-text: #ffffff;
  --surface: #ffffff;
  --surface-muted: #f1f5f9;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;

  --status-new: #64748b;
  --status-interested: #2563eb;
  --status-applied: #16a34a;
  --status-not-interested: #94a3b8;
  --warning: #d97706;
  --danger: #dc2626;
  --deadline-color: #dc2626;

  --radius: 12px;
  --tap-min: 44px;
}

[data-theme="dark"] {
  --bg: #0b0f19;
  --header-bg: #05070d;
  --header-text: #ffffff;
  --surface: #161b26;
  --surface-muted: #0f1420;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: #2a3242;

  --status-new: #94a3b8;
  --status-interested: #60a5fa;
  --status-applied: #4ade80;
  --status-not-interested: #64748b;
  --warning: #fbbf24;
  --danger: #f87171;
  --deadline-color: #f87171;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans Bengali",
    "SolaimanLipi", sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: 32px;
}

header {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 20px 16px 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}

header .top-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

header h1 {
  margin: 0 0 4px;
  font-size: 1.3rem;
  font-weight: 700;
}

header .subtitle {
  margin: 0;
  font-size: 0.85rem;
  color: #94a3b8;
}

.theme-toggle {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--header-text);
  border-radius: 999px;
  min-width: var(--tap-min);
  min-height: var(--tap-min);
  font-size: 1.1rem;
  cursor: pointer;
  flex: none;
}

.notify-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 12px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 10px 12px;
}

.notify-bar span {
  font-size: 0.85rem;
  color: #e2e8f0;
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  min-height: var(--tap-min);
  min-width: var(--tap-min);
}

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

.btn-success {
  background: var(--status-applied);
  color: white;
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: white;
}

.tabs {
  display: flex;
  gap: 6px;
  padding: 12px 16px 0;
  overflow-x: auto;
}

.tab {
  flex: none;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  min-height: var(--tap-min);
  white-space: nowrap;
}

.tab.active {
  background: var(--header-bg);
  color: white;
  border-color: var(--header-bg);
}

.status-bar {
  margin: 12px 16px 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-bar .error {
  color: var(--danger);
}

main {
  padding: 12px 16px 24px;
  max-width: 640px;
  margin: 0 auto;
}

.empty-state {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-muted);
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 6px;
}

.card-site {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--status-interested);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
  color: white;
  white-space: nowrap;
}

.badge-new {
  background: var(--status-new);
}
.badge-interested {
  background: var(--status-interested);
}
.badge-applied {
  background: var(--status-applied);
}
.badge-not_interested {
  background: var(--status-not-interested);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 4px;
  line-height: 1.4;
}

.card-deadline {
  font-size: 0.88rem;
  font-style: italic;
  font-weight: 600;
  color: var(--deadline-color);
  margin: 0 0 8px;
}

.card-details {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.card-details div {
  margin-bottom: 2px;
}

.card-warning {
  font-size: 0.8rem;
  color: var(--warning);
  margin-bottom: 8px;
}

.card-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.card-actions .btn {
  flex: 1;
  min-width: 100px;
}

.btn-ghost {
  background: var(--surface-muted);
  color: var(--text);
}

.card-link {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--status-interested);
  text-decoration: none;
}

.toast {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--header-bg);
  color: white;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
  max-width: 90%;
  text-align: center;
}

.toast.show {
  opacity: 1;
}

:focus-visible {
  outline: 3px solid #2563eb;
  outline-offset: 2px;
}

/* ---------- চ্যাট বাটন ও প্যানেল ---------- */

.chat-fab {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--status-interested);
  color: white;
  border: none;
  font-size: 1.4rem;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  cursor: pointer;
  z-index: 20;
}

.chat-panel {
  position: fixed;
  inset: 0;
  background: var(--surface-muted);
  z-index: 30;
  display: flex;
  flex-direction: column;
}

.chat-panel.hidden {
  display: none;
}

.chat-header {
  background: var(--header-bg);
  color: white;
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
}

.chat-close-btn {
  background: transparent;
  border: none;
  color: white;
  font-size: 1.1rem;
  cursor: pointer;
  min-height: var(--tap-min);
  min-width: var(--tap-min);
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-bubble {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 0.9rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

.chat-assistant {
  align-self: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

.chat-user {
  align-self: flex-end;
  background: var(--status-interested);
  color: white;
  border-bottom-right-radius: 4px;
}

.chat-form {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.chat-form input {
  flex: 1;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.9rem;
  min-height: var(--tap-min);
}

.chat-form input:disabled {
  opacity: 0.6;
}

/* ---------- পিডিএফ বিস্তারিত-দেখার প্যানেল ---------- */

.detail-content {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.pdf-page-canvas {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.detail-loading {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 32px 0;
}

.detail-error {
  color: var(--danger);
  font-size: 0.9rem;
  text-align: center;
  padding: 32px 16px;
}

.detail-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

.detail-download-link {
  display: inline-block;
  margin-top: 8px;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--status-interested);
  color: white;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  min-height: var(--tap-min);
}

/* ---------- সাইট ম্যানেজমেন্ট প্যানেল ---------- */

.sites-content {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.add-site-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}

.add-site-form input {
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 0.9rem;
  min-height: var(--tap-min);
  background: var(--bg);
  color: var(--text);
}

.add-site-form button {
  margin-top: 4px;
}

.sites-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 10px 2px 16px;
}

.sites-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
}

.site-row-info {
  min-width: 0;
}

.site-row-name {
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.site-row-url {
  font-size: 0.78rem;
  color: var(--text-muted);
  overflow-wrap: anywhere;
}

.btn-remove-site {
  flex: none;
  font-size: 0.78rem;
  padding: 8px 12px;
}