:root {
  --bg-main: #0d0d0d;
  --bg-secondary: #151515;
  --bg-panel: #1b1b1b;
  --bg-panel-soft: #202020;
  --border: #353535;
  --border-strong: #4a403a;
  --text-main: #d8d2c8;
  --text-muted: #9a948a;
  --text-dim: #6f6a60;
  --red-duty: #8e2f23;
  --red-rust: #a6402d;
  --orange-burnt: #b85c2e;
  --amber-metal: #c28a3b;
  --max-width: 1180px;
  --font-title: "Barlow Condensed", "Arial Narrow", Impact, sans-serif;
  --font-body: "IBM Plex Sans", Inter, system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--text-main);
  background:
    linear-gradient(180deg, rgba(13, 13, 13, 0.96), rgba(13, 13, 13, 0.99)),
    radial-gradient(circle at 18% 12%, rgba(166, 64, 45, 0.18), transparent 30%),
    var(--bg-main);
  font-family: var(--font-body);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-container {
  width: min(calc(100% - 32px), var(--max-width));
  margin-inline: auto;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(74, 64, 58, 0.72);
  background: rgba(13, 13, 13, 0.94);
  backdrop-filter: blur(14px);
}

.app-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 24px;
  min-width: 0;
}

.app-brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  min-width: max-content;
}

.app-brand img {
  display: block;
  width: auto;
  max-width: none;
  height: clamp(34px, 3vw, 42px);
}

.app-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.app-nav a,
.app-nav button,
.app-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid rgba(216, 210, 200, 0.16);
  background: rgba(21, 21, 21, 0.72);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.app-nav button {
  border-color: rgba(166, 64, 45, 0.72);
  color: #e5b29a;
}

.app-nav .app-notification {
  gap: 7px;
  border-color: rgba(194, 138, 59, 0.72);
  background: rgba(194, 138, 59, 0.12);
  color: var(--amber-metal);
}

.app-notification[hidden] {
  display: none;
}

.app-nav a:hover,
.app-nav a:focus-visible,
.app-nav button:hover,
.app-nav button:focus-visible,
.app-button:hover,
.app-button:focus-visible,
.app-brand:focus-visible {
  border-color: rgba(194, 138, 59, 0.58);
  outline: 2px solid transparent;
}

.app-main {
  padding: clamp(34px, 5vw, 58px) 0 clamp(56px, 7vw, 82px);
}

.auth-body {
  min-height: 100vh;
}

.auth-shell {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 28px 0;
}

.auth-card,
.profile-panel,
.content-panel,
.available-panel,
.course-hero,
.module-sidebar,
.lesson-panel {
  min-width: 0;
  max-width: 100%;
  border: 1px solid rgba(216, 210, 200, 0.13);
  border-left: 4px solid var(--red-duty);
  background:
    linear-gradient(180deg, rgba(32, 32, 32, 0.88), rgba(21, 21, 21, 0.92)),
    var(--bg-panel);
  box-shadow: 0 22px 64px rgba(0, 0, 0, 0.28);
}

.auth-card {
  width: min(calc(100% - 32px), 460px);
  padding: 30px;
}

.auth-brand {
  margin-bottom: 28px;
}

.app-kicker {
  margin: 0 0 12px;
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  line-height: 1;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
}

h2 {
  font-size: clamp(1.65rem, 3vw, 2.5rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.45rem);
}

p {
  color: var(--text-muted);
  line-height: 1.7;
}

h1,
h2,
h3,
p,
span,
strong,
a,
button,
input {
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.auth-copy {
  margin: 14px 0 24px;
}

.app-form {
  display: grid;
  gap: 16px;
}

.password-field { display: flex; gap: 0.5rem; }
.password-field input { flex: 1; min-width: 0; }
.password-toggle, .auth-text-button { color: inherit; background: transparent; border: 1px solid var(--line); cursor: pointer; }
.password-toggle { padding: 0 0.8rem; }
.auth-text-button { border: 0; text-decoration: underline; justify-self: start; padding: 0.25rem 0; }
.password-toggle:focus-visible, .auth-text-button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.app-field label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.app-field input {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid rgba(216, 210, 200, 0.18);
  outline: none;
  background: rgba(8, 8, 8, 0.58);
  color: var(--text-main);
}

.app-field input:focus {
  border-color: rgba(194, 138, 59, 0.72);
  box-shadow: 0 0 0 4px rgba(194, 138, 59, 0.08);
}

.app-button {
  width: fit-content;
  border-color: rgba(216, 210, 200, 0.18);
}

.app-button-primary {
  border-color: rgba(166, 64, 45, 0.9);
  background: linear-gradient(180deg, var(--orange-burnt), var(--red-rust));
  color: #160b08;
}

.app-button-secondary {
  margin-top: 16px;
}

.app-button:disabled {
  cursor: progress;
  opacity: 0.72;
}

.app-message,
.empty-state {
  min-height: 26px;
  margin: 0;
  color: #d8a37d;
  font-weight: 700;
}

.app-message.success {
  color: #b8c27a;
}

.app-message.error {
  color: #e2947f;
}

.app-message.warning {
  color: #d8a37d;
}

.app-message.muted {
  color: var(--text-muted);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(260px, 340px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  min-width: 0;
}

.profile-panel,
.content-panel,
.available-panel,
.course-hero,
.module-sidebar,
.lesson-panel {
  padding: 26px;
}

.profile-panel p,
.course-hero p {
  margin: 14px 0;
}

.profile-panel h1 {
  font-size: clamp(1.55rem, 2.5vw, 2.3rem);
}

.profile-name {
  margin: 14px 0 6px;
  color: var(--text-main);
  font-family: var(--font-title);
  font-size: clamp(1.5rem, 3vw, 2.35rem);
  font-weight: 800;
  line-height: 1.02;
  text-transform: uppercase;
}

.profile-email {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: clamp(0.82rem, 1.6vw, 0.95rem);
  line-height: 1.5;
}

.role-badge {
  display: inline-flex;
  max-width: 100%;
  min-height: 34px;
  align-items: center;
  padding: 0 10px;
  border: 1px solid rgba(194, 138, 59, 0.34);
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
}

.course-list {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.available-panel {
  display: grid;
  gap: 18px;
  margin-top: 24px;
  min-width: 0;
}

.available-course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  min-width: 0;
}

.course-card {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 20px;
  border: 1px solid rgba(216, 210, 200, 0.12);
  border-left: 3px solid var(--red-duty);
  background: rgba(13, 13, 13, 0.48);
}

.course-card span {
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
}

.course-card strong {
  font-family: var(--font-title);
  font-size: clamp(1.25rem, 2.2vw, 1.65rem);
  line-height: 1;
  text-transform: uppercase;
}

.course-card p {
  margin: 0;
}

.course-price {
  color: var(--text-main);
  font-family: var(--font-title);
  font-size: clamp(1.3rem, 2.2vw, 1.75rem);
  font-weight: 800;
  line-height: 1;
  text-transform: uppercase;
}

.available-course-card {
  align-content: start;
}

.available-course-card .app-button {
  width: fit-content;
  margin-top: 8px;
  padding-inline: 14px;
  font-size: 0.72rem;
}

.course-card-action {
  display: inline-flex;
  width: fit-content;
  min-height: 34px;
  align-items: center;
  margin-top: 4px;
  padding: 0 10px;
  border: 1px solid rgba(194, 138, 59, 0.28);
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
}

.course-card:hover,
.course-card:focus-visible {
  border-color: rgba(194, 138, 59, 0.44);
  outline: none;
}

.admin-access-card {
  display: grid;
  gap: 12px;
  margin-top: 22px;
  padding: 20px;
  border: 1px solid rgba(194, 138, 59, 0.28);
  border-left: 3px solid var(--orange-burnt);
  background:
    linear-gradient(180deg, rgba(142, 47, 35, 0.16), rgba(13, 13, 13, 0.54)),
    rgba(13, 13, 13, 0.48);
}

.admin-access-card span,
.status-pill {
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
}

.admin-access-card h3 {
  font-size: clamp(1.25rem, 2.2vw, 1.6rem);
}

.admin-shell,
.admin-content {
  display: grid;
  gap: 24px;
  min-width: 0;
}

.admin-hero h1 {
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.admin-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  min-width: 0;
}

.admin-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  min-width: 0;
}

.admin-card,
.admin-panel,
.admin-course-item {
  min-width: 0;
  border: 1px solid rgba(216, 210, 200, 0.12);
  border-left: 3px solid var(--red-duty);
  background:
    linear-gradient(180deg, rgba(32, 32, 32, 0.88), rgba(21, 21, 21, 0.92)),
    var(--bg-panel);
}

.admin-card {
  display: grid;
  align-content: start;
  gap: 12px;
  min-height: 230px;
  padding: 20px;
}

.admin-card h2 {
  font-size: clamp(1.45rem, 2.4vw, 2rem);
}

.admin-card p {
  margin: 0;
  font-size: 0.95rem;
}

.admin-card .app-button {
  width: 100%;
  margin-top: auto;
  padding-inline: 10px;
  font-size: 0.72rem;
}

.admin-summary-card {
  min-height: auto;
}

.admin-summary-card h2 {
  color: var(--text-main);
  font-size: clamp(2rem, 4vw, 3.1rem);
}

.status-pill {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  min-height: 30px;
  align-items: center;
  padding: 0 9px;
  border: 1px solid rgba(194, 138, 59, 0.28);
  background: rgba(8, 8, 8, 0.34);
}

.admin-panel {
  display: grid;
  gap: 18px;
  padding: 26px;
  box-shadow: 0 22px 64px rgba(0, 0, 0, 0.24);
}

.admin-panel[hidden],
.admin-content[hidden],
.admin-course-layout[hidden],
.admin-modal[hidden],
.admin-form[hidden],
.lesson-type-grid[hidden],
.lesson-panel[hidden],
.access-denied-panel[hidden],
.admin-access-card[hidden] {
  display: none;
}

.admin-panel-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  min-width: 0;
}

.admin-course-hero {
  display: grid;
  gap: 14px;
}

.admin-course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.admin-course-meta span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 0 9px;
  border: 1px solid rgba(216, 210, 200, 0.12);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
}

.admin-course-layout {
  display: grid;
  grid-template-columns: minmax(210px, 260px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  min-width: 0;
}

.admin-course-nav {
  position: sticky;
  top: 102px;
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 14px;
  border: 1px solid rgba(216, 210, 200, 0.12);
  border-left: 3px solid var(--red-duty);
  background: rgba(13, 13, 13, 0.56);
}

.admin-tab-button {
  width: 100%;
  min-width: 0;
  min-height: 42px;
  padding: 10px 12px;
  border: 1px solid rgba(216, 210, 200, 0.12);
  background: rgba(8, 8, 8, 0.34);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  text-align: left;
  text-transform: uppercase;
}

.admin-tab-button:hover,
.admin-tab-button:focus-visible,
.admin-tab-button.is-active {
  border-color: rgba(194, 138, 59, 0.48);
  color: var(--text-main);
  outline: none;
}

.admin-course-panels,
.admin-module-list,
.admin-lesson-list {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.course-summary-grid {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.admin-course-list {
  display: grid;
  gap: 12px;
}

.admin-list {
  display: grid;
  gap: 12px;
}

.admin-inline-filter { display: grid; gap: 0.4rem; min-width: 190px; }
.admin-inline-filter span { font: 700 0.72rem/1 var(--font-mono); text-transform: uppercase; }
.admin-inline-filter select { min-height: 42px; padding: 0 0.7rem; color: var(--text-main); background: var(--bg-panel); border: 1px solid var(--border); }
.lead-contact-links { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.admin-list-filters {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 260px);
  gap: 12px;
  padding: 14px;
  border: 1px solid rgba(216, 210, 200, 0.1);
  background: rgba(8, 8, 8, 0.22);
}

.admin-list-filters label {
  display: grid;
  gap: 7px;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.admin-list-filters input,
.admin-list-filters select {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid rgba(216, 210, 200, 0.16);
  background: rgba(8, 8, 8, 0.58);
  color: var(--text-main);
}

.admin-form {
  display: grid;
  gap: 16px;
  min-width: 0;
  padding: 20px;
  border: 1px solid rgba(216, 210, 200, 0.1);
  background: rgba(8, 8, 8, 0.28);
}

.admin-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  min-width: 0;
}

.admin-form-grid.compact {
  gap: 12px;
}

.admin-form label {
  display: grid;
  gap: 7px;
  min-width: 0;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.admin-form input,
.admin-form select,
.admin-form textarea,
.admin-form-grid input,
.admin-form-grid select,
.admin-form-grid textarea {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid rgba(216, 210, 200, 0.16);
  outline: none;
  background: rgba(8, 8, 8, 0.58);
  color: var(--text-main);
}

.admin-form textarea,
.admin-form-grid textarea {
  min-height: 96px;
  padding-block: 12px;
  resize: vertical;
  line-height: 1.55;
}

.admin-form input:focus,
.admin-form select:focus,
.admin-form textarea:focus,
.admin-form-grid input:focus,
.admin-form-grid select:focus,
.admin-form-grid textarea:focus {
  border-color: rgba(194, 138, 59, 0.72);
  box-shadow: 0 0 0 4px rgba(194, 138, 59, 0.08);
}

.span-2 {
  grid-column: span 2;
}

.check-field {
  display: inline-flex !important;
  grid-template-columns: auto 1fr;
  align-items: center;
  justify-content: start;
  min-height: 44px;
  padding: 0 10px;
  border: 1px solid rgba(216, 210, 200, 0.12);
  background: rgba(8, 8, 8, 0.32);
}

.check-field input {
  width: auto;
  min-height: 0;
}

.admin-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  min-width: 0;
}

.admin-note {
  margin: 0;
  padding: 12px 14px;
  border: 1px solid rgba(194, 138, 59, 0.24);
  background: rgba(194, 138, 59, 0.06);
  color: #d8a37d;
  font-weight: 700;
}

.admin-split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 18px;
  align-items: start;
  min-width: 0;
}

.admin-subpanel {
  display: grid;
  gap: 16px;
  min-width: 0;
  padding: 18px;
  border: 1px solid rgba(216, 210, 200, 0.1);
  background: rgba(8, 8, 8, 0.2);
}

.admin-course-item {
  display: grid;
  gap: 9px;
  padding: 18px;
  background: rgba(13, 13, 13, 0.48);
}

.admin-course-item.compact {
  padding: 16px;
}

.admin-course-item > span {
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
}

.admin-course-item strong {
  font-family: var(--font-title);
  font-size: clamp(1.25rem, 2.2vw, 1.65rem);
  line-height: 1.02;
  text-transform: uppercase;
}

.admin-course-item p {
  margin: 0;
}

.admin-course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.admin-course-meta span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 0 9px;
  border: 1px solid rgba(216, 210, 200, 0.12);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
}

.admin-preview {
  padding: 18px;
  box-shadow: none;
}

.admin-modal {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: 18px;
}

.admin-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(8px);
}

.admin-modal-panel {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 18px;
  width: min(100%, 760px);
  max-height: min(92vh, 860px);
  overflow: auto;
  padding: 24px;
  border: 1px solid rgba(216, 210, 200, 0.14);
  border-left: 4px solid var(--red-duty);
  background:
    linear-gradient(180deg, rgba(32, 32, 32, 0.96), rgba(18, 18, 18, 0.98)),
    var(--bg-panel);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.48);
}

.lesson-type-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.lesson-type-card {
  display: grid;
  gap: 8px;
  min-width: 0;
  min-height: 110px;
  padding: 14px;
  border: 1px solid rgba(216, 210, 200, 0.12);
  background: rgba(8, 8, 8, 0.34);
  color: var(--text-main);
  text-align: left;
}

.lesson-type-card span {
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
}

.lesson-type-card strong {
  font-family: var(--font-title);
  font-size: 1.25rem;
  line-height: 1;
  text-transform: uppercase;
}

.lesson-type-card:hover,
.lesson-type-card:focus-visible {
  border-color: rgba(194, 138, 59, 0.48);
  outline: none;
}

.admin-module-block {
  display: grid;
  gap: 16px;
  min-width: 0;
  padding: 20px;
  border: 1px solid rgba(216, 210, 200, 0.12);
  border-left: 3px solid var(--red-duty);
  background: rgba(13, 13, 13, 0.48);
}

.admin-module-block.is-dragging {
  opacity: 0.58;
}

.admin-module-block.is-drop-target {
  border-color: rgba(194, 138, 59, 0.58);
  box-shadow: inset 0 0 0 1px rgba(194, 138, 59, 0.24);
}

.admin-drag-handle {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 0 10px;
  border: 1px solid rgba(216, 210, 200, 0.12);
  color: var(--text-dim);
  cursor: grab;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
}

.admin-module-block > .admin-actions .app-button {
  min-height: 34px;
  padding-inline: 10px;
  font-size: 0.68rem;
}

.admin-module-header,
.admin-lesson-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 14px;
  align-items: start;
  min-width: 0;
}

.admin-module-header {
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
}

.admin-module-header:hover,
.admin-module-header:focus-visible {
  outline: none;
}

.admin-module-header > .admin-course-meta {
  justify-content: flex-start;
}

.admin-module-header h3 {
  margin-top: 5px;
}

.admin-module-header p,
.admin-lesson-row p {
  margin: 8px 0 0;
}

.admin-module-header span,
.admin-lesson-row span {
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
}

.admin-lesson-row {
  padding: 14px;
  border: 1px solid rgba(216, 210, 200, 0.1);
  background: rgba(8, 8, 8, 0.3);
}

.admin-lesson-row strong {
  display: block;
  margin-top: 5px;
  font-family: var(--font-title);
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  line-height: 1;
  text-transform: uppercase;
}

.course-progress-panel {
  display: grid;
  gap: 12px;
  margin-top: 10px;
  padding: 16px;
  border: 1px solid rgba(194, 138, 59, 0.22);
  background: rgba(8, 8, 8, 0.24);
}

.course-progress-copy {
  display: grid;
  gap: 4px;
}

.course-progress-copy span {
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.course-progress-copy strong {
  font-family: var(--font-title);
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1;
  text-transform: uppercase;
}

.course-progress-copy p {
  margin: 0;
}

.course-progress-track {
  height: 9px;
  overflow: hidden;
  border: 1px solid rgba(216, 210, 200, 0.12);
  background: rgba(8, 8, 8, 0.64);
}

.course-progress-track span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--red-rust), var(--amber-metal));
}

.course-shell {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.course-content-stack { display: grid; gap: 24px; min-width: 0; }
.course-overview { display: grid; gap: 18px; min-width: 0; padding: 26px; border: 1px solid rgba(216, 210, 200, 0.13); border-left: 4px solid var(--red-duty); background: linear-gradient(180deg, rgba(32, 32, 32, 0.88), rgba(21, 21, 21, 0.92)), var(--bg-panel); box-shadow: 0 22px 64px rgba(0, 0, 0, 0.28); }
.course-overview[hidden] { display: none; }
.course-overview-header { display: flex; align-items: start; justify-content: space-between; gap: 24px; padding-bottom: 18px; border-bottom: 1px solid rgba(216, 210, 200, 0.12); }
.course-overview-header h2 { margin-top: 4px; font-size: clamp(1.6rem, 3vw, 2.35rem); }
.course-overview-header p:last-child { margin-bottom: 0; color: var(--text-muted); }
.course-overview-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.course-overview .student-module-block { padding: 18px; }
.course-overview .student-module-toggle { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
.course-overview .student-module-progress { grid-column: 1 / -1; }
.course-overview .student-lesson-row { grid-template-columns: minmax(150px, 0.55fr) minmax(220px, 1fr) auto; align-items: center; gap: 16px; }
.course-overview .student-lesson-row small { text-align: right; }
.lesson-top-nav, .lesson-navigation { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.lesson-top-nav { margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid rgba(216, 210, 200, 0.12); }
.lesson-top-nav span { color: var(--text-muted); font: 800 0.72rem/1 var(--font-mono); text-transform: uppercase; }
.lesson-navigation { margin-top: 24px; padding-top: 20px; border-top: 1px solid rgba(216, 210, 200, 0.12); }
.lesson-navigation .app-button { max-width: 48%; }

.course-layout {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  min-width: 0;
}

.module-sidebar {
  position: sticky;
  top: 100px;
  width: 100%;
  min-width: 0;
  overflow: hidden;
}

.student-module-block {
  display: grid;
  gap: 10px;
  min-width: 0;
  padding: 14px;
  border: 1px solid rgba(216, 210, 200, 0.1);
  border-left: 3px solid var(--red-duty);
  background: rgba(8, 8, 8, 0.26);
}

.student-module-block + .student-module-block {
  margin-top: 12px;
}

.student-module-block.is-complete {
  border-left-color: var(--amber-metal);
}

.student-module-toggle {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  width: 100%;
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
}

.student-module-toggle > div {
  min-width: 0;
}

.student-module-toggle .admin-course-meta {
  min-width: 0;
}

.student-module-toggle span,
.student-lesson-row span {
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 800;
  text-transform: uppercase;
  white-space: normal;
  overflow-wrap: break-word;
  word-break: normal;
}

.module-sidebar .admin-course-meta span {
  white-space: normal;
  overflow-wrap: break-word;
  word-break: normal;
}

.student-module-toggle strong {
  display: block;
  margin-top: 5px;
  font-family: var(--font-title);
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  line-height: 1;
  text-transform: uppercase;
  white-space: normal;
  overflow-wrap: break-word;
  word-break: normal;
}

.student-module-toggle p {
  margin: 8px 0 0;
  font-size: 0.9rem;
  white-space: normal;
  overflow-wrap: break-word;
  word-break: normal;
}

.student-module-progress {
  height: 6px;
  width: 100%;
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(216, 210, 200, 0.1);
  background: rgba(8, 8, 8, 0.58);
}

.student-module-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--red-rust), var(--amber-metal));
}

.student-lesson-list {
  display: grid;
  gap: 8px;
}

.student-lesson-list[hidden],
.admin-lesson-list[hidden] {
  display: none;
}

.certificate-shell {
  width: min(calc(100% - 32px), 900px);
  margin-inline: auto;
}

.certificate-document {
  padding: clamp(28px, 6vw, 64px);
  border: 1px solid rgba(194, 138, 59, 0.5);
  border-left: 5px solid var(--amber-metal);
  background: linear-gradient(135deg, rgba(32, 32, 32, 0.96), rgba(13, 13, 13, 0.96));
  box-shadow: 0 22px 64px rgba(0, 0, 0, 0.3);
  text-align: center;
}

.certificate-document[hidden] {
  display: none;
}

.certificate-document h1 {
  margin-top: 24px;
  font-size: clamp(2rem, 5vw, 3.4rem);
}

.certificate-document h2 {
  margin: 14px auto 0;
  color: var(--amber-metal);
  font-size: clamp(1.7rem, 4vw, 2.8rem);
}

.certificate-name {
  margin: 20px 0 0;
  color: var(--text-main);
  font-family: var(--font-title);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1;
  text-transform: uppercase;
}

.certificate-date,
.certificate-code {
  margin-top: 24px;
}

.certificate-code {
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.certificate-actions {
  justify-content: center;
  margin-top: 30px;
}

@media print {
  .app-header,
  .certificate-actions {
    display: none;
  }

  .app-body,
  .certificate-document {
    color: #111;
    background: #fff;
    box-shadow: none;
  }
}

.student-lesson-row {
  display: grid;
  gap: 5px;
  width: 100%;
  min-width: 0;
  padding: 12px;
  border: 1px solid rgba(216, 210, 200, 0.1);
  background: rgba(13, 13, 13, 0.5);
  color: var(--text-main);
  text-align: left;
}

.student-lesson-row:hover,
.student-lesson-row:focus-visible,
.student-lesson-row.is-active {
  border-color: rgba(194, 138, 59, 0.44);
  outline: none;
}

.student-lesson-row.is-complete {
  border-color: rgba(194, 138, 59, 0.32);
}

.student-lesson-row strong {
  font-family: var(--font-body);
  font-size: 0.95rem;
  white-space: normal;
  overflow-wrap: break-word;
  word-break: normal;
}

.student-lesson-row small {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 800;
  text-transform: uppercase;
}

.module-block + .module-block {
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid rgba(216, 210, 200, 0.12);
}

.module-block h3 {
  margin-bottom: 8px;
  font-size: clamp(1.15rem, 2vw, 1.4rem);
}

.module-block p {
  margin: 0 0 12px;
  font-size: 0.95rem;
}

.lesson-list {
  display: grid;
  gap: 8px;
}

.lesson-button {
  width: 100%;
  min-width: 0;
  min-height: 42px;
  padding: 10px 12px;
  border: 1px solid rgba(216, 210, 200, 0.12);
  background: rgba(8, 8, 8, 0.46);
  color: var(--text-main);
  font-family: var(--font-body);
  font-weight: 700;
  text-align: left;
}

.lesson-button:hover,
.lesson-button:focus-visible,
.lesson-button.is-active {
  border-color: rgba(194, 138, 59, 0.48);
  color: #f2e8d8;
  outline: none;
}

.lesson-header {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(216, 210, 200, 0.12);
}

.lesson-header h2 {
  font-size: clamp(1.45rem, 3vw, 2.25rem);
}

.lesson-header span {
  color: var(--amber-metal);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.lesson-text {
  max-width: 72ch;
  white-space: pre-line;
}

.lesson-image {
  display: block;
  width: 100%;
  max-height: 520px;
  object-fit: contain;
  border: 1px solid rgba(216, 210, 200, 0.12);
  background: rgba(8, 8, 8, 0.48);
}

.lesson-video {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(216, 210, 200, 0.12);
  background: #000;
}

.lesson-placeholder {
  color: var(--text-muted);
  font-weight: 700;
}

.lesson-completion {
  display: grid;
  gap: 12px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(216, 210, 200, 0.12);
}

.lesson-completion p {
  margin: 0;
}

@media (max-width: 860px) {
  .app-container {
    width: min(calc(100% - 24px), var(--max-width));
  }

  .app-header-inner,
  .app-nav {
    gap: 10px;
  }

  .app-nav a,
  .app-nav button {
    min-height: 40px;
    padding: 0 10px;
    font-size: 0.72rem;
  }

  .dashboard-grid,
  .course-layout {
    grid-template-columns: 1fr;
  }

  .available-course-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .admin-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .course-overview-header { display: grid; }
  .course-overview-header .app-button { width: 100%; }
  .course-overview .student-module-toggle { grid-template-columns: 1fr; }
  .course-overview .student-lesson-row { grid-template-columns: 1fr; gap: 6px; }
  .course-overview .student-lesson-row small { text-align: left; }

  .admin-summary-grid,
  .course-summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .admin-panel-header {
    display: grid;
  }

  .admin-course-layout {
    grid-template-columns: 1fr;
  }

  .admin-course-nav {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lesson-type-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .admin-split,
  .admin-form-grid {
    grid-template-columns: 1fr;
  }

  .span-2 {
    grid-column: auto;
  }

  .module-sidebar {
    position: static;
  }
}

@media (max-width: 560px) {
  .app-header-inner {
    align-items: flex-start;
    flex-direction: column;
    min-height: 0;
    padding: 12px 0;
  }

  .app-nav {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
  }

  .app-brand img {
    height: 34px;
  }

  .course-overview { padding: 18px; }
  .lesson-top-nav, .lesson-navigation { align-items: stretch; flex-direction: column; }
  .lesson-navigation .app-button { width: 100%; max-width: none; }

  .app-nav a,
  .app-nav button {
    flex: 1 1 auto;
    min-height: 38px;
    padding: 0 8px;
    font-size: 0.68rem;
  }

  .app-main {
    padding: 30px 0 56px;
  }

  .auth-card,
  .profile-panel,
  .content-panel,
  .available-panel,
  .course-hero,
  .module-sidebar,
  .lesson-panel {
    padding: 20px;
  }

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

  .app-button {
    width: 100%;
  }

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

  .admin-summary-grid,
  .course-summary-grid,
  .admin-course-nav,
  .admin-list-filters {
    grid-template-columns: 1fr;
  }

  .admin-card,
  .admin-panel,
  .admin-course-item,
  .admin-module-block {
    padding: 18px;
  }

  .admin-form,
  .admin-subpanel {
    padding: 16px;
  }

  .admin-actions .app-button {
    width: 100%;
  }

  .admin-module-header,
  .admin-lesson-row,
  .student-module-toggle {
    grid-template-columns: 1fr;
  }

  .admin-modal {
    padding: 10px;
  }

  .admin-modal-panel {
    padding: 18px;
  }

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

  .profile-panel h1 {
    font-size: 1.55rem;
  }

  .profile-name {
    font-size: clamp(1.35rem, 9vw, 2rem);
  }

  .course-card {
    padding: 18px;
  }

  .available-course-card .app-button {
    width: 100%;
  }
}

@media (max-width: 380px) {
  .app-container {
    width: min(calc(100% - 20px), var(--max-width));
  }

  .auth-card,
  .profile-panel,
  .content-panel,
  .available-panel,
  .course-hero,
  .module-sidebar,
  .lesson-panel {
    padding: 18px;
  }
}

.legal-page { max-width: 820px; margin-block: 2rem; }
.legal-page h2 { margin-top: 2rem; }