:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #f9fafc;
  --text: #0b0b0b;
  --muted: #67738a;
  --accent: #2563eb;
  --border: #e3e8f3;
  --border-strong: #cfd8ea;
  --ok: #16a34a;
  --err: #dc2626;
  --shadow: 0 14px 40px rgba(16, 24, 40, 0.08);
}

[data-theme="dark"] {
  --bg: #0a0a0a;
  --surface: #111111;
  --surface-soft: #171717;
  --text: #f5f5f5;
  --muted: #9ca3af;
  --accent: #60a5fa;
  --border: #262626;
  --border-strong: #333333;
  --ok: #4ade80;
  --err: #f87171;
  --shadow: 0 18px 46px rgba(0, 0, 0, 0.36);
}

* { box-sizing: border-box; }

/* Logo adapts to light/dark theme - same as landing page */
.admin-logo { filter: invert(1); }
[data-theme="dark"] .admin-logo { filter: invert(0); }

html, body {
  margin: 0;
  padding: 0;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: 'IBM Plex Sans', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 0% 0%, rgba(37, 99, 235, 0.13), transparent 40%),
    radial-gradient(circle at 100% 20%, rgba(37, 99, 235, 0.08), transparent 42%),
    var(--bg);
}

h1, h2, h3 {
  margin: 0;
  font-family: 'Inter', sans-serif;
  letter-spacing: -0.02em;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  padding: 22px;
}

.auth-bg-shape {
  position: absolute;
  border-radius: 999px;
  filter: blur(30px);
  pointer-events: none;
}

.auth-bg-shape-a {
  width: 380px;
  height: 380px;
  left: -80px;
  top: -120px;
  background: rgba(37, 99, 235, 0.18);
}

.auth-bg-shape-b {
  width: 320px;
  height: 320px;
  right: -90px;
  bottom: -100px;
  background: rgba(16, 185, 129, 0.13);
}

.auth-card {
  width: min(560px, 100%);
  position: relative;
  z-index: 1;
  background: color-mix(in oklab, var(--surface) 90%, transparent);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 30px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.brand-row {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 10px;
  justify-content: center;
}

.brand-logo {
  width: 34px;
  height: 34px;
  filter: invert(1);
}

[data-theme="dark"] .brand-logo { filter: invert(0); }

.stack {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

label {
  display: grid;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
}

input, select, textarea {
  width: 100%;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 12px;
  color: var(--text);
  background: var(--surface);
  font: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

textarea { resize: vertical; }

.btn {
  border-radius: 999px;
  padding: 12px 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  border: none;
  background: var(--text);
  color: #fff;
}

[data-theme="dark"] .btn-primary {
  background: #fff;
  color: #0a0a0a;
}

.btn-secondary {
  border: 1px solid var(--border-strong);
  color: var(--text);
  background: transparent;
}

.btn.danger {
  border-color: color-mix(in oklab, var(--err) 45%, var(--border-strong));
  color: var(--err);
}

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

.row-icon-btn {
  width: 34px;
  height: 34px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.row-icon-btn:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: color-mix(in oklab, var(--accent) 8%, var(--surface));
}

.row-icon-btn svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.row-icon-btn.danger {
  color: var(--err);
  border-color: color-mix(in oklab, var(--err) 45%, var(--border-strong));
}

.row-icon-btn.danger:hover {
  background: color-mix(in oklab, var(--err) 10%, var(--surface));
  border-color: var(--err);
}

.status {
  margin-top: 12px;
  font-size: 14px;
}

.status.ok { color: var(--ok); }
.status.err { color: var(--err); }

.app-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: color-mix(in oklab, var(--surface) 92%, transparent);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.menu {
  display: grid;
  gap: 8px;
}

.menu-item {
  background: transparent;
  color: var(--text);
  border: 1px solid transparent;
  text-align: left;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 500;
}

.menu-item.active {
  background: var(--surface-soft);
  border-color: var(--border-strong);
}

.sidebar-actions {
  margin-top: auto;
  display: grid;
  gap: 8px;
}

.content {
  padding: 32px;
}

.topbar {
  margin-bottom: 18px;
}

.topbar h1 {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.05;
  margin-bottom: 8px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: 12px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  box-shadow: var(--shadow);
}

.stat-card h3 {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.stat-card p {
  font: 700 28px 'Inter', sans-serif;
  margin: 8px 0 0;
}

.overview-note {
  margin-top: 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  background: var(--surface);
}

.overview-note h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.overview-note p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: auto;
}

.panel-toolbar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  margin-bottom: 10px;
}

#panel-careers .panel-toolbar {
  grid-template-columns: 1fr 220px auto;
}

.pagination-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 10px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 940px;
}

th, td {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  text-align: left;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}

tbody tr:nth-child(even) {
  background: color-mix(in oklab, var(--surface-soft) 72%, transparent);
}

.composer-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 0;
}

.composer-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  min-height: 800px;
}

.composer-editor {
  min-width: 0;
  padding: 24px;
  border-right: 1px solid var(--border);
  overflow-y: auto;
  max-height: 800px;
}

.composer-section {
  display: grid;
  gap: 12px;
  margin-bottom: 28px;
}

.section-header {
  display: grid;
  gap: 4px;
}

.section-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

.section-header p {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}

.template-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.template-option {
  cursor: pointer;
  position: relative;
}

.template-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.template-card {
  padding: 12px;
  border: 2px solid var(--border);
  border-radius: 10px;
  background: var(--surface-soft);
  transition: all 0.2s ease;
  text-align: center;
  display: grid;
  gap: 6px;
}

.template-option input[type="radio"]:checked + .template-card {
  border-color: var(--accent);
  background: color-mix(in oklab, var(--accent) 10%, var(--surface-soft));
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 5%, transparent);
}

.template-option:hover .template-card {
  border-color: var(--accent);
  background: color-mix(in oklab, var(--accent) 5%, var(--surface-soft));
}

.template-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.template-desc {
  font-size: 11px;
  color: var(--muted);
}

.composer-preview {
  border-left: 1px solid var(--border);
  background: var(--surface-soft);
  padding: 24px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 12px;
}

.preview-header {
  display: grid;
  gap: 4px;
}

.preview-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

.preview-header p {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}

#emailPreviewFrame {
  width: 100%;
  height: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  min-height: 600px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.composer-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
  flex-wrap: wrap;
}

/* HTML Source Code Editor */
.html-editor-wrap {
  margin-top: 16px;
}
.html-editor-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.html-editor-hint {
  font-size: 12px;
  color: var(--muted);
}
.html-source-editor {
  width: 100%;
  min-height: 300px;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
  font-size: 13px;
  line-height: 1.5;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-soft);
  color: var(--text);
  resize: vertical;
  tab-size: 2;
  white-space: pre;
  overflow-x: auto;
}
.html-source-editor:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.html-editor-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

/* Template Grid - Radio Button Styling */
.template-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 0;
}

.template-option {
  cursor: pointer;
  position: relative;
}

.template-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.template-card {
  padding: 14px;
  border: 2px solid var(--border);
  border-radius: 10px;
  background: var(--surface-soft);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
  display: grid;
  gap: 6px;
  align-items: center;
}

.template-icon {
  font-size: 24px;
  line-height: 1;
}

.template-card .template-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.template-card .template-desc {
  font-size: 11px;
  color: var(--muted);
}

.template-option input[type="radio"]:checked + .template-card {
  border-color: var(--accent);
  background: color-mix(in oklab, var(--accent) 12%, var(--surface-soft));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 8%, transparent);
  transform: translateY(-2px);
}

.template-option:hover .template-card {
  border-color: color-mix(in oklab, var(--accent) 60%, var(--border));
  background: color-mix(in oklab, var(--accent) 6%, var(--surface-soft));
  transform: translateY(-1px);
}

/* Audience Selection - Radio Button Styling */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 0;
}

.audience-option {
  cursor: pointer;
  position: relative;
}

.audience-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.audience-card {
  padding: 14px;
  border: 2px solid var(--border);
  border-radius: 10px;
  background: var(--surface-soft);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: grid;
  gap: 8px;
}

.audience-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.audience-count {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}

.audience-option input[type="radio"]:checked + .audience-card {
  border-color: var(--accent);
  background: color-mix(in oklab, var(--accent) 12%, var(--surface-soft));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 8%, transparent);
  transform: translateY(-2px);
}

.audience-option:hover .audience-card {
  border-color: color-mix(in oklab, var(--accent) 60%, var(--border));
  background: color-mix(in oklab, var(--accent) 6%, var(--surface-soft));
  transform: translateY(-1px);
}

/* Custom Emails Styling */
.custom-emails-label {
  display: grid;
  gap: 8px;
}

.custom-emails-label textarea {
  font-family: 'Courier New', monospace;
  font-size: 13px;
  padding: 10px;
}

.custom-emails-hint {
  font-size: 11px;
  color: var(--muted);
  font-weight: 500;
}

/* Input Hints */
.input-hint {
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
  font-weight: 500;
}

/* Preview Info Display */
.preview-info {
  display: grid;
  gap: 8px;
  padding: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 12px;
}

.preview-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 8px;
  align-items: center;
  font-size: 12px;
}

.preview-label {
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.preview-value {
  color: var(--text);
  font-weight: 500;
  word-break: break-word;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  z-index: 9999;
  padding: 18px;
}

.modal-card {
  width: min(760px, 100%);
  max-height: 90vh;
  overflow: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.modal-card-sm {
  width: min(460px, 100%);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}

.modal-close {
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text);
  width: 34px;
  height: 34px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
}

.modal-form,
.modal-body {
  padding: 16px 18px;
}

.modal-fields {
  display: grid;
  gap: 12px;
}

.modal-field {
  display: grid;
  gap: 6px;
}

.modal-field label {
  font-size: 13px;
  font-weight: 600;
}

.modal-actions {
  padding: 0 18px 16px;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

@media (max-width: 640px) {
  .modal-actions {
    justify-content: stretch;
  }

  .modal-actions .btn {
    width: 100%;
  }
}

/* Animations */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

.composer-section {
  animation: slideInUp 0.4s ease-out;
}

.status {
  animation: slideInUp 0.3s ease-out;
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 14px;
    gap: 12px;
  }

  .content {
    padding: 20px;
  }

  .sidebar-actions {
    margin-top: 4px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .sidebar-actions .btn {
    padding: 10px 12px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .template-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .audience-grid {
    grid-template-columns: 1fr;
  }

  .panel-toolbar,
  #panel-careers .panel-toolbar {
    grid-template-columns: 1fr;
  }

  .composer-layout {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .composer-editor {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 20px;
    max-height: none;
  }

  .composer-preview {
    border-left: none;
    border-top: 1px solid var(--border);
    padding: 20px;
  }

  #emailPreviewFrame {
    min-height: 420px;
  }
}

@media (max-width: 640px) {
  .sidebar {
    padding: 12px;
  }

  .menu {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .menu-item {
    padding: 10px;
    font-size: 15px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .topbar h1 {
    font-size: 34px;
  }

  .topbar p {
    font-size: 14px;
  }

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

  .composer-editor {
    padding: 16px;
  }

  .composer-section {
    margin-bottom: 20px;
  }

  .section-header h3 {
    font-size: 14px;
  }

  .input-hint {
    font-size: 10px;
  }

  .preview-info {
    font-size: 11px;
  }

  .preview-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .html-editor-header,
  .html-editor-actions,
  .composer-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .sidebar-actions {
    grid-template-columns: 1fr;
  }

  .table-wrap {
    -webkit-overflow-scrolling: touch;
  }
}