:root {
  color-scheme: light;
  --bg: #f3f4f2;
  --surface: #ffffff;
  --surface-2: #e8ebe9;
  --line: #d1d6d3;
  --text: #191b1c;
  --soft: #62696d;
  --accent: #c53d34;
  --accent-hover: #ad352d;
  --success: #267b52;
  --warning: #966114;
  --radius: 18px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Be Vietnam Pro", "Segoe UI", sans-serif;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }

.admin-header {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(243, 244, 242, 0.92);
  padding: 12px clamp(18px, 3vw, 42px);
  backdrop-filter: blur(18px);
}

.admin-brand { display: flex; align-items: center; gap: 12px; }
.admin-brand > .brand-mark { width: 38px; height: 38px; display: block; flex: 0 0 38px; }
.admin-brand > .brand-mark img { width: 100%; height: 100%; }
.admin-brand div { display: grid; gap: 2px; }
.admin-brand strong { font-size: 14px; }
.admin-brand small { color: var(--soft); font-size: 11px; }
.header-actions { display: flex; gap: 10px; }

.quiet-button, .primary-button, .preview-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  padding: 0 18px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
}

.quiet-button:hover { background: var(--surface-2); }
.primary-button { border-color: transparent; background: var(--accent); color: #fff8f6; }
.primary-button:hover { background: var(--accent-hover); }
.preview-button { width: 100%; margin-top: 14px; border-color: color-mix(in srgb, var(--warning) 50%, var(--line)); color: var(--warning); }
button:disabled { opacity: 0.55; cursor: wait; }
button, a, input, textarea, select { transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease, transform 180ms ease; }
button:active:not(:disabled) { transform: scale(.98); }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 34%, transparent); outline-offset: 2px; }

.login-shell { min-height: calc(100dvh - 72px); display: grid; place-items: center; padding: 48px 20px; }
.login-card { width: min(100%, 560px); border: 1px solid var(--line); border-radius: 24px; background: var(--surface); padding: clamp(30px, 6vw, 58px); box-shadow: 0 30px 100px rgba(34,44,40,.12); }
.kicker { margin: 0 0 16px; color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.login-card h1 { margin: 0 0 18px; font-size: clamp(38px, 6vw, 62px); letter-spacing: -.06em; line-height: .98; }
.login-card > p:not(.kicker):not(.login-note) { margin: 0; color: var(--soft); line-height: 1.65; }
.login-card form { display: grid; gap: 10px; margin-top: 34px; }
.login-card label { font-size: 12px; font-weight: 700; }
.login-card input { min-height: 52px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); color: var(--text); padding: 0 15px; }
.login-card .primary-button { margin-top: 8px; }
.login-note { margin: 22px 0 0; color: var(--soft); font-size: 11px; line-height: 1.55; }
.inline-status { min-height: 18px; margin: 4px 0 0; color: var(--soft); font-size: 12px; }
.inline-status.is-error { color: #ad352d; }
.inline-status.is-success { color: var(--success); }

.admin-app { min-height: calc(100dvh - 72px); display: grid; grid-template-columns: 270px minmax(0, 1fr); padding-bottom: 90px; }
.admin-sidebar { position: sticky; top: 72px; align-self: start; height: calc(100dvh - 72px); display: flex; flex-direction: column; border-right: 1px solid var(--line); padding: 28px 20px; }
.mode-badge { align-self: flex-start; border: 1px solid color-mix(in srgb, var(--success) 45%, var(--line)); border-radius: 999px; color: var(--success); padding: 7px 10px; font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.mode-badge.is-preview { border-color: color-mix(in srgb, var(--warning) 45%, var(--line)); color: var(--warning); }
.admin-sidebar nav { display: grid; gap: 6px; margin-top: 32px; }
.nav-tab { width: 100%; display: grid; grid-template-columns: 30px 1fr; align-items: center; gap: 10px; border: 0; border-radius: 12px; background: transparent; color: var(--soft); padding: 13px 14px; cursor: pointer; text-align: left; font-weight: 700; }
.nav-tab span { font-family: ui-monospace, Menlo, monospace; font-size: 10px; }
.nav-tab:hover, .nav-tab.is-active { background: var(--surface-2); color: var(--text); }
.nav-tab.is-active span { color: var(--accent); }
.sidebar-note { margin-top: auto; border-top: 1px solid var(--line); padding-top: 20px; }
.sidebar-note strong { font-size: 12px; }
.sidebar-note p { margin: 8px 0 0; color: var(--soft); font-size: 11px; line-height: 1.55; }

.admin-workspace { min-width: 0; padding: clamp(30px, 5vw, 70px); }
.preview-banner { max-width: 1180px; margin: 0 auto 22px; border: 1px solid color-mix(in srgb, var(--warning) 45%, var(--line)); border-radius: 12px; background: color-mix(in srgb, var(--warning) 8%, var(--surface)); color: var(--warning); padding: 13px 16px; font-size: 12px; line-height: 1.5; }
.admin-panel { display: none; max-width: 1180px; margin: 0 auto; }
.admin-panel.is-active { display: block; }
.panel-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, .65fr); gap: 48px; align-items: end; margin-bottom: 38px; }
.panel-heading h2 { margin: 0; font-size: clamp(34px, 4.5vw, 58px); letter-spacing: -.055em; line-height: 1; }
.panel-heading > p { margin: 0; color: var(--soft); font-size: 13px; line-height: 1.6; }

.editor-stack { display: grid; gap: 18px; }
.editor-section, .settings-card, .integration-card, .video-editor, .course-topic-editor { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); padding: clamp(22px, 3vw, 34px); }
.editor-section h3, .video-editor h3, .integration-card h3 { margin: 0; font-size: 20px; letter-spacing: -.035em; }
.editor-grid, .settings-card { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.editor-section .editor-grid { margin-top: 24px; }
.field { min-width: 0; display: grid; align-content: start; gap: 8px; }
.field.is-wide { grid-column: 1 / -1; }
.field label { color: var(--text); font-size: 12px; font-weight: 700; }
.field input, .field textarea, .field select { width: 100%; border: 1px solid var(--line); border-radius: 11px; background: var(--bg); color: var(--text); padding: 12px 13px; line-height: 1.45; }
.field input, .field select { min-height: 48px; }
.field textarea { min-height: 96px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent); outline: 3px solid color-mix(in srgb, var(--accent) 16%, transparent); }
.field small { color: var(--soft); font-size: 10px; line-height: 1.45; }

.video-editor-list { display: grid; gap: 18px; }
.course-editor-list { display: grid; gap: 18px; margin-top: 18px; }
.course-security-card { margin: 0; }
.course-structure-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; border: 1px dashed color-mix(in srgb, var(--accent) 38%, var(--line)); border-radius: 14px; background: color-mix(in srgb, var(--accent) 4%, var(--surface)); padding: 16px 18px; }
.course-structure-toolbar > div { display: grid; gap: 4px; }
.course-structure-toolbar strong { font-size: 13px; }
.course-structure-toolbar small, .course-topic-footer > span { color: var(--soft); font-size: 10px; }
.course-structure-button { min-height: 36px; display: inline-flex; align-items: center; justify-content: center; flex: none; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); color: var(--text); padding: 0 12px; cursor: pointer; font-size: 10px; font-weight: 700; }
.course-structure-button:hover:not(:disabled) { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); background: var(--surface-2); }
.course-structure-button.is-add { border-color: color-mix(in srgb, var(--success) 38%, var(--line)); color: var(--success); }
.course-structure-button.is-delete { border-color: color-mix(in srgb, var(--accent) 32%, var(--line)); color: var(--accent); }
.course-structure-button.is-small { min-height: 30px; padding-inline: 9px; font-size: 9px; }
.course-structure-button:disabled { opacity: .38; cursor: not-allowed; }
.course-topic-editor { scroll-margin-top: 96px; }
.course-topic-heading { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 24px; }
.course-topic-identity { min-width: 0; display: flex; align-items: center; gap: 13px; }
.course-topic-identity span { width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 38px; border-radius: 10px; background: var(--surface-2); color: var(--accent); font-family: ui-monospace, Menlo, monospace; font-size: 10px; }
.course-topic-heading h3 { margin: 0; font-size: 22px; letter-spacing: -.035em; }
.course-lesson-editor { margin-top: 26px; scroll-margin-top: 96px; border-top: 1px solid var(--line); padding-top: 24px; }
.course-lesson-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.course-lesson-editor h4 { margin: 0; color: var(--text); font-size: 13px; }
.course-topic-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 26px; border-top: 1px dashed var(--line); padding-top: 20px; }
.video-editor { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 24px; }
.video-number { width: 72px; height: 72px; display: grid; place-items: center; border-radius: 16px; background: var(--surface-2); color: var(--accent); font-family: ui-monospace, Menlo, monospace; font-size: 20px; }
.video-editor-main { min-width: 0; }
.video-editor-main > p { margin: 6px 0 22px; color: var(--soft); font-size: 11px; }
.video-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }

.integration-card { display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: end; margin-top: 18px; }
.integration-card > code { min-width: 0; display: block; overflow-wrap: anywhere; border: 1px solid var(--line); border-radius: 11px; background: var(--bg); color: var(--warning); padding: 14px; font-size: 12px; }
.integration-card ol { grid-column: 1 / -1; margin: 4px 0 0; padding-left: 22px; color: var(--soft); font-size: 12px; line-height: 1.7; }
.integration-card li + li { margin-top: 5px; }
.integration-card li code { border: 0; border-radius: 4px; background: var(--surface-2); color: var(--warning); padding: 2px 5px; font-size: .9em; overflow-wrap: anywhere; }

.orders-heading { grid-template-columns: 1fr auto; margin-bottom: 28px; }
.order-stats { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; margin-bottom: 18px; }
.stat-card { min-width: 0; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); padding: 18px; }
.stat-card.is-revenue { grid-column: span 2; background: color-mix(in srgb, var(--accent) 9%, var(--surface)); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.stat-card strong { display: block; overflow-wrap: anywhere; font-family: ui-monospace, Menlo, monospace; font-size: clamp(20px, 2.2vw, 28px); font-variant-numeric: tabular-nums; letter-spacing: -.04em; }
.stat-card span { display: block; margin-top: 4px; color: var(--text); font-size: 11px; font-weight: 700; }
.stat-card small { display: block; margin-top: 9px; color: var(--soft); font-size: 9px; line-height: 1.45; }

.manual-customer-card { margin-bottom: 18px; border: 1px solid color-mix(in srgb, var(--success) 35%, var(--line)); border-radius: var(--radius); background: color-mix(in srgb, var(--success) 4%, var(--surface)); padding: clamp(22px, 3vw, 32px); }
.manual-customer-heading { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: start; margin-bottom: 24px; }
.manual-customer-heading h3 { margin: 0; font-size: clamp(22px, 2.5vw, 30px); letter-spacing: -.04em; }
.manual-customer-heading p:not(.kicker) { max-width: 720px; margin: 9px 0 0; color: var(--soft); font-size: 11px; line-height: 1.6; }
.manual-customer-heading > span { border: 1px solid color-mix(in srgb, var(--success) 45%, var(--line)); border-radius: 999px; color: var(--success); padding: 7px 10px; font-size: 9px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.manual-customer-form { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.manual-customer-form .field.is-wide { grid-column: 1 / -1; }
.send-email-option { grid-column: 1 / span 2; display: flex; align-items: center; gap: 10px; color: var(--text); font-size: 11px; cursor: pointer; }
.send-email-option input { width: 17px; height: 17px; accent-color: var(--accent); }
.manual-customer-action { grid-column: 3 / -1; display: flex; align-items: center; justify-content: flex-end; gap: 14px; }
.manual-customer-action .inline-status { flex: 1; margin: 0; text-align: right; }

.sales-toolbar { display: grid; grid-template-columns: minmax(260px, .8fr) minmax(0, 1.2fr); gap: 18px; align-items: end; margin: 28px 0 12px; }
.order-search { display: grid; gap: 8px; }
.order-search > span { color: var(--text); font-size: 11px; font-weight: 700; }
.order-search input { width: 100%; min-height: 46px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface); color: var(--text); padding: 0 14px; }
.order-search input::placeholder { color: #737980; }
.status-filters { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.status-filters button { min-height: 38px; display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--soft); padding: 0 12px; cursor: pointer; font-size: 10px; font-weight: 700; }
.status-filters button:hover, .status-filters button.is-active { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); background: color-mix(in srgb, var(--accent) 10%, var(--surface)); color: var(--text); }
.status-filters span { min-width: 20px; border-radius: 999px; background: var(--surface-2); padding: 3px 6px; color: var(--text); font-family: ui-monospace, Menlo, monospace; font-size: 9px; text-align: center; }
.orders-status { margin: 0 0 10px; text-align: right; }
.orders-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { width: 100%; border-collapse: collapse; min-width: 1080px; }
th, td { padding: 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--soft); font-size: 10px; text-transform: uppercase; letter-spacing: .08em; }
td { font-size: 12px; line-height: 1.55; }
td strong, td small { display: block; }
td small { color: var(--soft); }
.customer-cell { min-width: 210px; }
.customer-cell a { display: block; color: var(--text); font-size: 11px; overflow-wrap: anywhere; }
.customer-cell a:first-of-type { margin-top: 8px; }
.customer-cell a:hover { color: var(--accent-hover); }
.manual-note { max-width: 220px; margin-top: 7px; color: var(--warning); }
.status-pill { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 5px 8px; font-size: 10px; font-weight: 800; }
.status-pill.paid { color: var(--success); border-color: color-mix(in srgb, var(--success) 50%, var(--line)); }
.status-pill.pending { color: var(--warning); border-color: color-mix(in srgb, var(--warning) 50%, var(--line)); }
.status-pill.cancelled { color: var(--soft); }
.status-pill + small { margin-top: 9px; }
.order-action { display: grid; gap: 8px; min-width: 260px; }
.order-action-row { display: flex; flex-wrap: wrap; gap: 6px; }
.order-action select { min-height: 34px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 11px; padding: 0 8px; }
.order-action button { min-height: 34px; border: 1px solid transparent; border-radius: 8px; background: var(--surface-2); color: var(--text); cursor: pointer; padding: 0 10px; font-size: 10px; font-weight: 700; }
.order-action button:hover:not(:disabled) { background: #dce1de; }
.order-action button:disabled { cursor: not-allowed; opacity: .45; }
.order-action .danger-action { border-color: color-mix(in srgb, var(--accent) 34%, var(--line)); background: color-mix(in srgb, var(--accent) 8%, var(--surface)); color: var(--accent); }
.order-action .reset-device-button { min-width: 132px; }
.access-status { min-width: 170px; }
.access-status strong { font-family: ui-monospace, Menlo, monospace; }
.access-status .email-error { color: var(--accent); }
.empty-state { padding: 70px 20px; color: var(--soft); text-align: center; }

.save-bar { position: fixed; right: 0; bottom: 0; left: 270px; z-index: 18; min-height: 74px; display: flex; align-items: center; justify-content: flex-end; gap: 10px; border-top: 1px solid var(--line); background: rgba(243,244,242,.94); padding: 12px clamp(20px, 5vw, 70px); backdrop-filter: blur(18px); }
.save-bar .inline-status { margin-right: auto; }

@media (max-width: 900px) {
  .admin-app { grid-template-columns: 1fr; }
  .admin-sidebar { position: sticky; top: 72px; z-index: 10; height: auto; display: block; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); background: var(--bg); padding: 10px 16px; }
  .mode-badge, .sidebar-note { display: none; }
  .admin-sidebar nav { display: flex; min-width: max-content; margin: 0; }
  .nav-tab { width: auto; grid-template-columns: 24px auto; }
  .save-bar { left: 0; }
  .panel-heading { grid-template-columns: 1fr; gap: 18px; }
  .order-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat-card.is-revenue { grid-column: span 2; }
  .manual-customer-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .send-email-option { grid-column: 1; }
  .manual-customer-action { grid-column: 2; }
  .sales-toolbar { grid-template-columns: 1fr; }
  .status-filters { justify-content: flex-start; }
}

@media (max-width: 760px) {
  .orders-table-wrap { overflow: visible; border: 0; background: transparent; }
  table { min-width: 0; }
  thead { display: none; }
  tbody { display: grid; gap: 12px; }
  tr { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
  td { min-width: 0; border-bottom: 1px solid var(--line); padding: 14px; }
  td::before { content: attr(data-label); display: block; margin-bottom: 8px; color: var(--soft); font-size: 8px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
  .action-cell { grid-column: 1 / -1; border-bottom: 0; }
  .order-action, .access-status, .customer-cell { min-width: 0; }
  .order-action-row { align-items: stretch; }
  .order-action select, .order-action button { flex: 1; }
}

@media (max-width: 620px) {
  .admin-header { min-height: 64px; padding-inline: 14px; }
  .admin-brand small, .header-actions a { display: none; }
  .admin-sidebar { top: 64px; }
  .admin-workspace { padding: 30px 14px 110px; }
  .editor-grid, .settings-card, .video-fields { grid-template-columns: 1fr; }
  .field.is-wide { grid-column: 1; }
  .video-editor { grid-template-columns: 1fr; }
  .video-number { width: 48px; height: 48px; }
  .integration-card { grid-template-columns: 1fr; }
  .integration-card ol { grid-column: 1; }
  .course-structure-toolbar, .course-topic-heading, .course-topic-footer { align-items: stretch; flex-direction: column; }
  .course-topic-heading .course-structure-button, .course-topic-footer .course-structure-button, .course-structure-toolbar .course-structure-button { width: 100%; }
  .course-lesson-heading { align-items: flex-start; }
  .order-stats { grid-template-columns: 1fr; }
  .stat-card.is-revenue { grid-column: 1; }
  .manual-customer-heading { grid-template-columns: 1fr; }
  .manual-customer-heading > span { justify-self: start; }
  .manual-customer-form { grid-template-columns: 1fr; }
  .manual-customer-form .field.is-wide, .send-email-option, .manual-customer-action { grid-column: 1; }
  .manual-customer-action { align-items: stretch; flex-direction: column; }
  .manual-customer-action .inline-status { text-align: left; }
  .manual-customer-action .primary-button { width: 100%; }
  .status-filters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .status-filters button { justify-content: space-between; }
  .orders-status { text-align: left; }
  tr { grid-template-columns: 1fr; }
  .action-cell { grid-column: 1; }
  .save-bar { min-height: 82px; padding: 10px 14px; }
  .save-bar .inline-status { position: absolute; right: 14px; bottom: 72px; left: 14px; margin: 0; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); padding: 9px; pointer-events: none; }
}