:root {
  --bg: #ffffff;
  --panel: #ffffff;
  --sidebar: #ffffff;
  --field: #ffffff;
  --soft: #f8fafc;
  --text: #020817;
  --muted: #64748b;
  --border: #e2e8f0;
  --accent: #020817;
  --accent-2: #0f172a;
  --accent-soft: #f1f5f9;
  --ring: rgba(2, 8, 23, 0.14);
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
  --radius: 8px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}
.shell { display: grid; grid-template-columns: 300px 1fr; min-height: 100vh; }
.sidebar {
  position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column; justify-content: flex-start; padding: 20px 16px;
  border-right: 1px solid var(--border); background: var(--sidebar);
}
.sidebar-head { display: flex; align-items: center; gap: 12px; padding: 8px 10px 18px; border-bottom: 1px solid var(--border); }
.brand-mark {
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: var(--radius);
  background: var(--accent); color: #ffffff; font-weight: 800; letter-spacing: 0;
}
.brand { font-size: 17px; font-weight: 750; letter-spacing: 0; }
.sidebar-head p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.nav { display: grid; gap: 16px; margin-top: 22px; align-content: start; }
.nav-group { display: grid; gap: 6px; }
.nav-label {
  padding: 0 12px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav a, .ghost-button, .nav-trigger {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 10px 12px; border-radius: var(--radius); text-decoration: none;
  color: var(--muted); background: transparent; border: 1px solid transparent; cursor: pointer;
  font: inherit; font-weight: 600;
}
.nav-trigger { justify-content: space-between; }
.nav-trigger span { display: flex; align-items: center; gap: 10px; }
.nav svg, .ghost-button svg, .nav-trigger svg { width: 18px; height: 18px; }
.nav a.active, .nav a:hover, .ghost-button:hover, .nav-trigger.active, .nav-trigger:hover {
  background: var(--accent-soft); border-color: var(--ring); color: var(--text); box-shadow: none;
}
.nav-submenu {
  display: grid;
  gap: 4px;
  max-height: 0;
  overflow: hidden;
  padding-left: 28px;
  transition: max-height 180ms ease, padding-top 180ms ease;
}
.nav-collapsible.open .nav-submenu { max-height: 260px; padding-top: 6px; }
.nav-submenu a {
  padding-left: 12px;
  font-size: 14px;
  font-weight: 500;
}
.nav-trigger .chevron { transition: transform 180ms ease; }
.nav-collapsible.open .nav-trigger .chevron { transform: rotate(90deg); }
.sidebar-footer { display: grid; gap: 8px; margin-top: auto; padding-top: 18px; border-top: 1px solid var(--border); }
.content { padding: 28px; }
.page-head h1, .page-head p { margin: 0; }
.page-head p { margin-top: 8px; color: var(--muted); }
.page-head-actions { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 22px; }
.page-head-actions .primary-button { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.page-head-actions .primary-button svg { width: 18px; height: 18px; }
.stats-inline { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.stats-inline span {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 12px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--soft); color: var(--muted); font-size: 14px;
}
.stats-inline b { color: var(--text); }
.subnav {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.subnav a {
  padding: 10px 14px;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--soft);
}
.subnav a.active {
  background: var(--accent);
  color: var(--bg);
}
.stats-grid, .charts-grid { display: grid; gap: 18px; margin-top: 22px; }
.stats-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.charts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.split-grid { display: grid; grid-template-columns: minmax(300px, 420px) 1fr; gap: 18px; }
.card, .table-card, .auth-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card, .table-card { padding: 22px; }
.stat span { color: var(--muted); display: block; }
.stat strong { display: block; margin-top: 10px; font-size: 34px; }
.form-grid { display: grid; gap: 16px; margin-top: 22px; }
.form-grid .full { grid-column: 1 / -1; }
label span { display: block; margin-bottom: 8px; color: var(--muted); }
input, textarea, select {
  width: 100%; padding: 12px 14px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--field); color: var(--text);
}
input:focus, textarea:focus, select:focus, .visual-editor:focus {
  outline: 2px solid var(--ring); outline-offset: 2px; border-color: transparent;
}
.primary-button {
  width: fit-content; border: 0; border-radius: var(--radius); padding: 12px 18px;
  background: var(--accent); color: #ffffff; font-weight: 700; cursor: pointer;
}
.secondary-button {
  display: inline-flex; align-items: center; justify-content: center;
  width: fit-content; border: 1px solid var(--border); border-radius: var(--radius); padding: 9px 13px;
  background: var(--panel); color: var(--text); font-weight: 600; text-decoration: none;
}
.danger-button {
  display: inline-flex; align-items: center; justify-content: center;
  width: fit-content; border: 1px solid rgba(220, 38, 38, 0.24); border-radius: var(--radius); padding: 9px 13px;
  background: rgba(220, 38, 38, 0.08); color: #b91c1c; font-weight: 700; cursor: pointer;
}
.icon-button {
  display: grid; place-items: center; width: 42px; min-width: 42px; height: 42px;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--soft); color: var(--text); cursor: pointer;
}
.icon-button svg { width: 18px; height: 18px; }
.password-field { display: flex; gap: 8px; align-items: center; }
.password-field input { flex: 1; }
.flash { padding: 12px 14px; border-radius: var(--radius); margin-bottom: 18px; }
.flash.success { background: rgba(16, 185, 129, 0.15); }
.flash.error { background: rgba(239, 68, 68, 0.15); }
.table-card table { width: 100%; border-collapse: collapse; }
.table-card th, .table-card td { text-align: left; padding: 14px; border-bottom: 1px solid var(--border); }
.table-text { max-width: 420px; color: var(--muted); }
.table-muted { display: block; margin-top: 3px; color: var(--muted); font-size: 13px; }
.table-actions { text-align: right !important; }
.status-pill {
  display: inline-flex; align-items: center; border-radius: 999px; padding: 5px 10px;
  background: rgba(15, 23, 42, 0.08); color: var(--text); font-size: 12px; font-weight: 700;
}
.status-pill.success { background: rgba(16, 185, 129, 0.14); color: #047857; }
.status-pill.error { background: rgba(220, 38, 38, 0.12); color: #b91c1c; }
.status-pill.muted { background: rgba(100, 116, 139, 0.14); color: var(--muted); }
.admin-actions { display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.admin-actions form { display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; margin: 0; }
.admin-actions select { width: auto; min-width: 130px; padding: 9px 12px; }
.modal {
  position: fixed; inset: 0; z-index: 50;
  display: grid; place-items: center; padding: 24px;
}
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(15, 23, 42, 0.48);
}
.modal-panel {
  position: relative; z-index: 1;
  width: min(520px, 100%);
  max-height: min(720px, calc(100vh - 48px));
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.24);
  padding: 22px;
}
.modal-panel-wide { width: min(720px, 100%); }
.modal-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.modal-head h2, .modal-head p { margin: 0; }
.modal-head p { margin-top: 4px; color: var(--muted); }
.modal-form { margin-top: 20px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; }
.auth-body { display: grid; place-items: center; min-height: 100vh; padding: 24px; }
.auth-card { width: min(460px, 100%); padding: 32px; }
.helper { margin-top: 22px; }
.template-list { display: grid; gap: 12px; }
.template-item { padding: 14px; border-radius: var(--radius); background: var(--soft); }
.field-label { display: block; margin-bottom: 8px; color: var(--muted); }
.composer-grid { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 18px; align-items: start; }
.format-switcher { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.format-switcher input { display: none; }
.format-switcher span {
  display: grid; gap: 6px; min-height: 108px; padding: 14px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--field); color: var(--text); cursor: pointer;
}
.format-switcher b { display: block; font-size: 15px; }
.format-switcher small { color: var(--muted); line-height: 1.35; }
.format-switcher svg, .editor-toolbar svg, .preview-media svg { width: 18px; height: 18px; }
.format-switcher input:checked + span { border-color: var(--accent); box-shadow: 0 0 0 2px var(--ring); }
.format-switcher input:checked + span svg { color: var(--accent-2); }
.composer-panel {
  display: grid; gap: 14px; padding: 16px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--soft);
}
.panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.panel-head h2, .panel-head p { margin: 0; }
.panel-head p { margin-top: 4px; color: var(--muted); }
.field-hint { margin: -4px 0 0; color: var(--muted); font-size: 13px; }
.hidden { display: none !important; }
.editor-toolbar {
  display: flex; gap: 8px; padding: 8px; border: 1px solid var(--border); border-radius: var(--radius) var(--radius) 0 0;
  background: var(--soft);
}
.editor-toolbar button {
  display: grid; place-items: center; width: 36px; height: 34px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--panel); color: var(--text); cursor: pointer;
}
.visual-editor {
  min-height: 220px; padding: 16px; border: 1px solid var(--border); border-top: 0;
  border-radius: 0 0 var(--radius) var(--radius); background: var(--field); line-height: 1.55;
}
.visual-editor:empty::before { content: attr(data-placeholder); color: var(--muted); }
.preview-card { position: sticky; top: 24px; padding: 18px; }
.eyebrow { display: block; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 10px; }
.phone-preview {
  border-radius: var(--radius); border: 1px solid var(--border); padding: 14px;
  background: var(--soft);
}
.preview-media {
  display: grid; place-items: center; gap: 8px; min-height: 170px; border-radius: var(--radius);
  border: 1px dashed var(--border); color: var(--muted); text-align: center;
}
.preview-text { margin-top: 14px; padding: 14px; border-radius: var(--radius); background: var(--field); line-height: 1.5; }
.detail-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.detail-grid { display: grid; grid-template-columns: minmax(280px, 420px) 1fr; gap: 18px; align-items: start; }
.details-list { display: grid; gap: 14px; margin: 0; }
.details-list div { display: flex; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--border); padding-bottom: 12px; }
.details-list dt { color: var(--muted); }
.details-list dd { margin: 0; font-weight: 700; text-align: right; }
.button-preview { display: grid; gap: 8px; margin-top: 12px; }
.button-preview span { display: block; padding: 10px 12px; border-radius: var(--radius); background: var(--accent-soft); text-align: center; font-weight: 700; }
.templates-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.template-card-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; grid-column: 1 / -1; }
.template-card code { color: var(--muted); }
.full { grid-column: 1 / -1; }

@media (max-width: 980px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--border); }
  .stats-grid, .charts-grid { grid-template-columns: 1fr; }
  .split-grid { grid-template-columns: 1fr; }
  .composer-grid, .templates-grid, .detail-grid { grid-template-columns: 1fr; }
  .page-head-actions { align-items: stretch; flex-direction: column; }
  .detail-head { align-items: flex-start; flex-direction: column; }
  .format-switcher { grid-template-columns: 1fr; }
  .preview-card { position: static; }
}