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

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-hover: #334155;
  --border: #334155;
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --danger: #ef4444;
  --warning: #f39c12;
  --msg-me-bg: #6366f1;
  --msg-other-bg: #1e293b;
  --system-color: #64748b;
  --radius: 10px;
}

html,
body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

.hidden {
  display: none !important;
}

/* Screen-reader only (visible to crawlers, hidden visually) */
.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;
}

/* ---- Landing page ---- */
.landing {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

.landing-card {
  text-align: center;
  max-width: 420px;
  width: 100%;
}

.brand-logo {
  max-width: 280px;
  height: auto;
  margin-bottom: 16px;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.tagline {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 28px;
}

.privacy-badges {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.badge {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.privacy-note {
  margin-top: 28px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.prompt-text {
  color: var(--text-muted);
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.name-input-row {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.name-input-row input {
  flex: 1;
  max-width: 220px;
}

/* ---- Buttons ---- */
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-validate {
  background: #3730a3;
}

.btn-validate:hover {
  background: #312e81;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 18px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}

.btn-secondary:hover {
  background: var(--surface-hover);
}

.btn-icon {
  background: var(--surface);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 12px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}

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

.codeword-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.codeword-row .admin-input {
  flex: 1;
}

.btn-toggle-vis {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
}

.btn-toggle-vis:hover {
  color: var(--text);
}

/* ---- Inputs ---- */
input[type="text"] {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s;
}

input[type="text"]:focus {
  border-color: var(--accent);
}

input[type="text"]::placeholder {
  color: var(--text-muted);
}

/* ---- Overlay (name prompt on room page, destroyed screen) ---- */
.overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 24px;
}

.destroyed-text {
  color: var(--text-muted);
  margin-bottom: 24px;
  font-size: 0.95rem;
  line-height: 1.5;
}

/* ---- Room layout ---- */
.room-container {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  max-width: 700px;
  margin: 0 auto;
}

/* Header */
.room-header {
  display: flex;
  flex-direction: column;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 10px;
}

.room-header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.room-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.room-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}

.room-header-text {
  display: flex;
  flex-direction: column;
}

.room-header-info {
  display: flex;
  align-items: center;
  gap: 14px;
  position: relative;
}

.room-header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.room-title {
  font-weight: 700;
  font-size: 0.95rem;
}

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

.user-count {
  font-size: 0.82rem;
  color: var(--text-muted);
  cursor: pointer;
  position: relative;
}

.user-count:hover {
  color: var(--text);
}

.user-list {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 180px;
  z-index: 50;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.user-list-header {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 10px 14px 6px;
  border-bottom: 1px solid var(--border);
}

.user-list ul {
  list-style: none;
  padding: 6px 0;
  margin: 0;
  max-height: 200px;
  overflow-y: auto;
}

.user-list li {
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--text);
}

.timer {
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
  font-size: 0.95rem;
  font-weight: 600;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
}

.timer-warning {
  color: var(--warning);
  border-color: var(--warning);
}

.timer-critical {
  color: var(--danger);
  border-color: var(--danger);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Share banner */
.share-banner {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 20px;
  text-align: center;
  flex-shrink: 0;
}

.share-banner p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.share-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 8px;
}

.room-url-input {
  flex: 1;
  max-width: 360px;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--bg);
}

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

/* Messages area */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: var(--radius);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.msg-me {
  align-self: flex-end;
  background: var(--msg-me-bg);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.msg-other {
  align-self: flex-start;
  background: var(--msg-other-bg);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

.msg-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
}

.msg-name {
  font-size: 0.78rem;
  font-weight: 600;
  color: #a5b4fc;
}

.msg-me .msg-name {
  color: rgba(255, 255, 255, 0.7);
}

.msg-body {
  font-size: 0.92rem;
  line-height: 1.45;
}

.msg-media img,
.msg-media video {
  max-width: 100%;
  max-height: 300px;
  border-radius: 6px;
  margin-top: 4px;
  display: block;
}

.msg-system {
  align-self: center;
  font-size: 0.8rem;
  color: var(--system-color);
  padding: 4px 0;
}

/* Privacy footer */
.privacy-footer {
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-muted);
  padding: 4px 20px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* Input bar */
.input-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px calc(20px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.btn-attach {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  cursor: pointer;
  flex-shrink: 0;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: color 0.15s, background 0.15s;
}

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

.input-bar input[type="text"] {
  flex: 1;
}

.btn-send {
  padding: 12px 20px;
}

/* ---- Scrollbar ---- */
.messages::-webkit-scrollbar {
  width: 6px;
}

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

.messages::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

/* ---- Mobile tweaks ---- */
@media (max-width: 520px) {
  .logo {
    font-size: 1.6rem;
  }

  .room-header {
    padding: 10px 14px;
  }

  .messages {
    padding: 12px 14px;
  }

  .input-bar {
    padding: 10px 14px;
  }

  .msg {
    max-width: 90%;
  }

  .share-row {
    flex-direction: column;
    align-items: stretch;
  }

  .room-url-input {
    max-width: 100%;
  }

  .name-input-row {
    flex-direction: column;
    align-items: stretch;
  }

  .name-input-row input {
    max-width: 100%;
  }

  .stat-cards {
    grid-template-columns: 1fr;
  }
}

/* ---- Admin dashboard ---- */
.admin-input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s;
}

.admin-input:focus {
  border-color: var(--accent);
}

.admin-input::placeholder {
  color: var(--text-muted);
}

.login-error {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--danger);
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
}

.admin-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
}

.stat-section {
  margin-bottom: 32px;
}

.stat-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text);
}

.stat-sub-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-top: 16px;
  margin-bottom: 10px;
  color: var(--text-muted);
}

.stat-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

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

.stat-period {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
}

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

.stat-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

.admin-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.admin-table td {
  color: var(--text);
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
}

.table-empty {
  color: var(--text-muted);
  text-align: center;
  font-style: italic;
}

.admin-footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ---- Admin tabs ---- */
.admin-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.admin-tab {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 20px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.admin-tab:hover {
  color: var(--text);
}

.admin-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---- Funnel period selector ---- */
.funnel-period-selector {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.funnel-period-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 16px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.funnel-period-btn:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.funnel-period-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---- Funnel visualization ---- */
.funnel-container {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.funnel-step {
  padding: 14px 0;
}

.funnel-step-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.funnel-step-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.funnel-step-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
}

.funnel-bar-track {
  width: 100%;
  height: 28px;
  background: var(--surface);
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.funnel-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 6px 0 0 6px;
  transition: width 0.4s ease;
  min-width: 4px;
}

.funnel-rate {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.funnel-arrow {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1;
  padding: 2px 0;
}

/* ---- Sessions tab ---- */
.sessions-table-wrap {
  overflow-x: auto;
}

.session-link {
  color: var(--accent);
  text-decoration: none;
}

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

/* ---- Permanent room styles ---- */
.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.btn-permanent {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}

.btn-permanent:hover {
  background: var(--accent);
  color: #fff;
}

.permanent-note {
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.slug-input-row {
  display: flex;
  align-items: center;
  gap: 0;
  justify-content: center;
}

.slug-prefix {
  background: var(--surface);
  border: 1px solid var(--border);
  border-right: none;
  border-radius: var(--radius) 0 0 var(--radius);
  padding: 12px 12px 12px 16px;
  font-size: 0.95rem;
  color: var(--text-muted);
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
}

.slug-input-row input {
  border-radius: 0 var(--radius) var(--radius) 0 !important;
  flex: 1;
  max-width: 260px;
}

.slug-status {
  font-size: 0.8rem;
  margin-top: 6px;
  min-height: 1.2em;
  color: var(--text-muted);
}

.slug-status-ok {
  color: #22c55e;
}

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

.confirm-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}

.btn-danger:hover {
  opacity: 0.85;
}

.btn-danger:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ---- Settings page ---- */
.settings-container {
  max-width: 480px;
  margin: 0 auto;
  padding: 24px;
  min-height: 100vh;
}

.settings-header {
  margin-bottom: 32px;
}

.settings-back {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.settings-back:hover {
  color: var(--text);
}

.settings-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-top: 8px;
}

.settings-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.settings-section-danger {
  border-color: rgba(239, 68, 68, 0.3);
}

.settings-section-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.settings-section-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  line-height: 1.4;
}

.settings-label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 600;
}

/* ---- Feature Request Section ---- */
.feature-request-section {
  max-width: 580px;
  margin: 0 auto;
  padding: 48px 24px;
}

.feature-request-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
}

.feature-request-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.feature-request-subtitle {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.5;
}

.feature-request-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feature-textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  color: var(--text);
  font-size: 0.92rem;
  font-family: inherit;
  outline: none;
  resize: vertical;
  min-height: 100px;
  transition: border-color 0.15s;
  line-height: 1.5;
}

.feature-textarea:focus {
  border-color: var(--accent);
}

.feature-textarea::placeholder {
  color: var(--text-muted);
}

.feature-email-input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text);
  font-size: 0.92rem;
  outline: none;
  transition: border-color 0.15s;
}

.feature-email-input:focus {
  border-color: var(--accent);
}

.feature-email-input::placeholder {
  color: var(--text-muted);
}

.feature-submit-btn {
  align-self: center;
  margin-top: 4px;
}

.feature-feedback {
  font-size: 0.85rem;
  margin-top: 4px;
  min-height: 1.2em;
}

.feature-feedback-success {
  color: #22c55e;
}

.feature-feedback-error {
  color: var(--danger);
}

/* ---- SEO section ---- */
.seo-section {
  max-width: 580px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

.seo-content h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.seo-content p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}

.faq-list {
  margin-top: 28px;
}

.faq-list h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text);
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
}

.faq-item summary {
  padding: 12px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::before {
  content: "+";
  display: inline-block;
  width: 18px;
  font-weight: 700;
  color: var(--text-muted);
}

.faq-item[open] summary::before {
  content: "−";
}

.faq-item p {
  padding: 0 16px 14px;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin: 0;
}