/* Unity Tech Email Studio — admin UI styles */
:root {
  --primary: #2563EB;
  --primary-dark: #1D4FBE;
  --indigo: #1E3A8A;
  --indigo-deep: #142866;
  --accent: #FDC41F;
  --bg: #F4F7FC;
  --bg-pale: #EEF3FB;
  --bg-pale-2: #F7FAFE;
  --card: #FFFFFF;
  --text: #0F1B3D;
  --text-soft: #3F4D75;
  --muted: #7B85A0;
  --line: #E0E7F2;
  --line-strong: #C4D2E7;
  --shadow-sm: 0 2px 6px rgba(30,58,138,0.08);
  --shadow-md: 0 12px 28px -10px rgba(30,58,138,0.18);
  --shadow-lg: 0 24px 60px -20px rgba(30,58,138,0.28);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Manrope', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

button, input, textarea { font-family: inherit; }

a { color: var(--primary); }

/* === Login === */
.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--bg-pale) 0%, var(--bg-pale-2) 100%);
  padding: 24px;
}
.login-card {
  background: var(--card);
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  padding: 40px 36px;
  width: 100%;
  max-width: 420px;
  border: 1px solid var(--line);
}
.login-logo { width: 150px; height: auto; display: block; margin: 0 auto 18px; }
.login-card h1 {
  margin: 0 0 6px 0;
  font-size: 22px;
  text-align: center;
  color: var(--indigo);
  letter-spacing: -0.01em;
}
.login-sub {
  margin: 0 0 24px 0;
  text-align: center;
  color: var(--text-soft);
  font-size: 14.5px;
}
.login-card form { display: grid; gap: 14px; }
.login-card label {
  display: grid; gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-soft);
}
.login-card input {
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  font-size: 15px;
  background: #fff;
  color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}
.login-card input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37,99,235,0.12);
}
.login-card .error {
  background: #FEF1F2;
  border: 1px solid #FCA5A5;
  color: #991B1B;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 13.5px;
  margin-bottom: 6px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  border: 2px solid var(--primary);
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14.5px;
  cursor: pointer;
  transition: all .15s;
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-outline {
  background: #fff;
  color: var(--indigo);
  border: 2px solid var(--indigo);
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
}
.btn-outline:hover { background: var(--indigo); color: #fff; }
.btn-text {
  background: transparent;
  color: var(--text-soft);
  border: 0;
  padding: 8px 12px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
}
.btn-text:hover { color: var(--primary); }

/* === Studio shell === */
.studio-body {
  height: 100vh;
  display: grid;
  grid-template-rows: 64px auto 1fr;
}

/* Tab bar — only shown on narrow screens to switch between Compose and Preview */
.studio-tabs {
  display: none;
  background: #fff;
  border-bottom: 1px solid var(--line);
  padding: 0 16px;
  gap: 4px;
}
.studio-tabs .tab {
  background: transparent;
  border: 0;
  padding: 14px 18px;
  font-weight: 700;
  font-size: 14px;
  color: var(--text-soft);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
  transition: color .15s, border-color .15s;
}
.studio-tabs .tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.studio-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  z-index: 10;
}
.studio-brand { display: flex; align-items: center; gap: 12px; }
.studio-brand img { width: 42px; height: auto; }
.studio-brand strong { color: var(--indigo); font-size: 16px; letter-spacing: -0.01em; }
.studio-top-actions { display: flex; gap: 10px; align-items: center; }
.logout-form { margin: 0; }

.studio-main {
  display: grid;
  grid-template-columns: 260px 1fr 1fr;
  gap: 0;
  height: 100%;
  overflow: hidden;
}

.studio-sidebar, .studio-editor, .studio-preview {
  overflow-y: auto;
  padding: 22px;
}
.studio-sidebar { background: #fff; border-right: 1px solid var(--line); }
.studio-editor { background: var(--bg); border-right: 1px solid var(--line); }
.studio-preview { background: var(--bg-pale-2); }

.studio-sidebar h2,
.studio-editor h2,
.preview-toolbar h2 {
  margin: 0 0 12px 0;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
}

.muted { color: var(--text-soft); font-size: 13.5px; }
.muted.small { font-size: 12.5px; }
.muted code {
  background: #fff;
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 12px;
}

.sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.sidebar-head h2 { margin: 0; }
.btn-text-sm {
  background: transparent;
  border: 1.5px solid var(--line);
  color: var(--primary);
  font-weight: 700;
  font-size: 12.5px;
  padding: 6px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: all .15s;
}
.btn-text-sm:hover { background: var(--bg-pale); border-color: var(--primary); }

.tpl-list { list-style: none; padding: 0; margin: 12px 0 0 0; display: grid; gap: 8px; }
.tpl-list li {
  position: relative;
  border: 1.5px solid var(--line);
  background: #fff;
  border-radius: 12px;
  padding: 12px 14px;
  cursor: pointer;
  transition: all .15s;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.tpl-list li:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}
.tpl-list li.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}
.tpl-list .tpl-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.tpl-list strong { display: block; font-size: 14.5px; color: var(--indigo); }
.tpl-list span { font-size: 12.5px; color: var(--text-soft); }
.tpl-list .tpl-tag {
  align-self: flex-start;
  display: inline-block;
  font-style: normal;
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--primary);
  background: var(--bg-pale);
  padding: 2px 8px;
  border-radius: 999px;
  margin-bottom: 2px;
}
.tpl-list .tpl-del {
  flex: 0 0 auto;
  background: transparent;
  border: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1;
  width: 24px; height: 24px;
  border-radius: 50%;
  cursor: pointer;
  transition: all .15s;
}
.tpl-list .tpl-del:hover { background: #FEF1F2; color: #B91C1C; }

.field { display: grid; gap: 6px; margin-bottom: 14px; }
.field > span {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-soft);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.field-row { display: grid; gap: 14px; grid-template-columns: 1fr 1fr; }
.field input[type="text"], .field input[type="url"], .field textarea {
  padding: 11px 13px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  font-size: 14.5px;
  background: #fff;
  color: var(--text);
  width: 100%;
  transition: border-color .15s, box-shadow .15s;
}
.field input:focus, .field textarea:focus, .body-editor:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37,99,235,0.12);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px;
  background: #fff;
  border: 1.5px solid var(--line);
  border-bottom: 0;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}
.toolbar button {
  background: transparent;
  border: 0;
  padding: 6px 10px;
  font-size: 13.5px;
  border-radius: 6px;
  cursor: pointer;
  color: var(--text);
}
.toolbar button:hover { background: var(--bg-pale); color: var(--primary); }

.body-editor {
  border: 1.5px solid var(--line);
  border-top-left-radius: 0;
  border-top-right-radius: 0;
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 10px;
  padding: 14px 16px;
  min-height: 220px;
  font-size: 14.5px;
  line-height: 1.6;
  background: #fff;
  color: var(--text);
}
.body-editor p { margin: 0 0 12px 0; }
.body-editor ul, .body-editor ol { margin: 0 0 12px 0; padding-left: 22px; }
.body-editor a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }

.advanced {
  margin-top: 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 14px;
}
.advanced summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 13px;
  color: var(--text-soft);
  padding: 6px 0;
}
.advanced .check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  padding: 4px 0;
  color: var(--text);
}

/* Preview pane */
.preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.preview-modes { display: flex; gap: 6px; }
.preview-modes button {
  background: #fff;
  border: 1.5px solid var(--line);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-soft);
}
.preview-modes button.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.preview-frame-wrap {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  display: flex;
  justify-content: center;
  min-height: 600px;
  box-shadow: var(--shadow-sm);
}
.preview-frame-wrap iframe {
  width: 100%;
  height: 800px;
  max-width: 700px;
  border: 0;
  background: var(--bg-pale-2);
  transition: max-width .2s;
}
.preview-frame-wrap.mobile iframe { max-width: 380px; }

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--indigo);
  color: #fff;
  padding: 12px 20px;
  border-radius: 999px;
  box-shadow: var(--shadow-lg);
  font-weight: 600;
  font-size: 14px;
  z-index: 100;
  animation: slideIn .2s ease;
}
@keyframes slideIn { from { transform: translateY(8px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* Narrow viewports — tab between Compose and Preview, sidebar above */
@media (max-width: 1100px) {
  .studio-body { grid-template-rows: 64px auto auto 1fr; }
  .studio-tabs { display: flex; }

  .studio-main {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }
  .studio-sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 14px 18px;
    max-height: 220px;
  }
  .studio-sidebar h2 { margin-bottom: 6px; }
  .studio-sidebar > p.muted { display: none; }
  .tpl-list {
    margin-top: 8px;
    grid-auto-flow: column;
    grid-auto-columns: minmax(220px, 1fr);
    overflow-x: auto;
    padding-bottom: 8px;
    scroll-snap-type: x mandatory;
  }
  .tpl-list li { scroll-snap-align: start; }

  /* Both panes occupy the same grid cell; tabs swap which one is visible */
  .studio-editor, .studio-preview {
    grid-row: 2 / 3;
    grid-column: 1 / 2;
  }
  .studio-editor { display: block; }
  .studio-preview { display: none; }
  .studio-body[data-tab="preview"] .studio-editor { display: none; }
  .studio-body[data-tab="preview"] .studio-preview { display: block; }
  .preview-frame-wrap iframe { height: calc(100vh - 320px); min-height: 480px; }
}

@media (max-width: 720px) {
  .studio-topbar { padding: 0 14px; gap: 6px; flex-wrap: wrap; height: auto; min-height: 64px; }
  .studio-brand strong { display: none; }
  .studio-top-actions { gap: 6px; }
  .studio-top-actions .btn-text { padding: 8px 8px; font-size: 13px; }
  .studio-top-actions .btn-primary,
  .studio-top-actions .btn-outline { padding: 9px 14px; font-size: 13px; }
  #btn-popout { display: none; }
  .studio-sidebar { max-height: 180px; }
}