/* ── Nõiatar LMS — Frontend CSS ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --nk-bg:          #F8F1E7;
  --nk-card:        #FFF9F0;
  --nk-text:        #111111;
  --nk-muted:       #6F6254;
  --nk-gold:        #A87526;
  --nk-gold-dark:   #6E4517;
  --nk-black:       #090909;
  --nk-border:      #E6D8C4;
  --nk-success:     #2F8A4C;
  --nk-warning:     #C88A2D;
  --nk-sidebar-w:   260px;
  --nk-radius:      18px;
  --nk-radius-card: 18px;
  --nk-radius-button:10px;
  --nk-shadow:      0 18px 45px rgba(17,17,17,.08);
  --nk-shadow-card: 0 18px 45px rgba(17,17,17,.08);
  --nk-font-h:      'Playfair Display', 'Cormorant Garamond', Georgia, serif;
  --nk-font-b:      'Inter', 'Lato', Arial, sans-serif;
  --nk-font-heading:var(--nk-font-h);
  --nk-font-ui:     var(--nk-font-b);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body { font-family: var(--nk-font-b); color: var(--nk-text); background: var(--nk-bg); }
a    { color: var(--nk-gold); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── App shell ─────────────────────────────────────────────────────────── */
.nk-app {
  display: flex;
  min-height: 100vh;
  background: var(--nk-bg);
}

/* ── Sidebar ───────────────────────────────────────────────────────────── */
.nk-sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--nk-sidebar-w);
  height: 100vh;
  background: var(--nk-black);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  overflow-x: hidden;
  transition: transform .3s ease;
}

.nk-sidebar__top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 20px 16px;
  border-bottom: 1px solid rgba(168,117,38,.2);
}

.nk-sidebar__logo {
  width: 38px;
  height: 38px;
  object-fit: contain;
  filter: drop-shadow(0 0 6px rgba(168,117,38,.5));
}

.nk-sidebar__brand {
  display: flex;
  flex-direction: column;
}

.nk-sidebar__eyebrow {
  font-family: var(--nk-font-b);
  font-size: 9px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--nk-gold);
  opacity: .7;
}

.nk-sidebar__name {
  font-family: var(--nk-font-h);
  font-size: 16px;
  color: #fff;
  letter-spacing: .03em;
}

.nk-sidebar__ornament {
  width: 100%;
  opacity: .12;
  margin: 8px 0;
  pointer-events: none;
}

.nk-sidebar__nav {
  flex: 1;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nk-sidebar__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  color: rgba(255,255,255,.55);
  font-size: 14px;
  font-weight: 500;
  transition: background .2s, color .2s;
  text-decoration: none;
}

.nk-sidebar__link:hover,
.nk-sidebar__link.is-active {
  background: rgba(168,117,38,.15);
  color: var(--nk-gold);
  text-decoration: none;
}

.nk-sidebar__icon {
  font-size: 16px;
  width: 22px;
  text-align: center;
  flex-shrink: 0;
}

.nk-sidebar__bottom {
  padding: 12px;
  border-top: 1px solid rgba(168,117,38,.15);
}

.nk-sidebar__link--logout { color: rgba(255,255,255,.35); }
.nk-sidebar__link--logout:hover { color: #e07070; background: rgba(224,112,112,.1); }

.nk-sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 90;
}

/* ── Main content ──────────────────────────────────────────────────────── */
.nk-content {
  margin-left: var(--nk-sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Topbar ─────────────────────────────────────────────────────────────── */
.nk-topbar {
  height: 60px;
  background: var(--nk-card);
  border-bottom: 1px solid var(--nk-border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.nk-topbar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
}

.nk-topbar-name { font-weight: 600; }

.nk-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nk-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--nk-text);
  border-radius: 2px;
  transition: .3s;
}

/* ── Breadcrumb ─────────────────────────────────────────────────────────── */
.nk-breadcrumb {
  font-size: 13px;
  color: var(--nk-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.nk-breadcrumb a { color: var(--nk-muted); }
.nk-breadcrumb a:hover { color: var(--nk-gold); }

/* ── Page inner ─────────────────────────────────────────────────────────── */
.nk-page-inner {
  padding: 32px 40px;
  max-width: 1140px;
}

/* ── Typography helpers ──────────────────────────────────────────────────── */
.nk-eyebrow {
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--nk-gold);
  font-family: var(--nk-font-b);
  display: block;
  margin-bottom: 8px;
}

.nk-page-title {
  font-family: var(--nk-font-h);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 8px;
}

.nk-section-title {
  font-family: var(--nk-font-h);
  font-size: 20px;
  font-weight: 600;
  margin: 32px 0 16px;
  color: var(--nk-text);
}

.nk-muted { color: var(--nk-muted); font-size: 14px; }

/* ── Greeting ────────────────────────────────────────────────────────────── */
.nk-greeting { margin-bottom: 40px; }

/* ── Courses grid ────────────────────────────────────────────────────────── */
.nk-courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.nk-course-card {
  background: var(--nk-card);
  border-radius: var(--nk-radius);
  border: 1px solid var(--nk-border);
  box-shadow: var(--nk-shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform .25s, box-shadow .25s;
}

.nk-course-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(20,12,4,.13);
  text-decoration: none;
}

.nk-course-card__thumb {
  height: 180px;
  background-size: cover;
  background-position: center;
}

.nk-course-card__body { padding: 20px 20px 12px; flex: 1; }

.nk-course-card__title {
  font-family: var(--nk-font-h);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
  line-height: 1.3;
}

.nk-course-card__footer {
  padding: 0 20px 20px;
  display: flex;
  justify-content: flex-end;
}

/* ── Progress bar ────────────────────────────────────────────────────────── */
.nk-progress-bar {
  height: 6px;
  background: var(--nk-border);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 6px;
}

.nk-progress-bar--lg { height: 10px; }

.nk-progress-bar__fill {
  height: 100%;
  background: var(--nk-gold);
  border-radius: 99px;
  transition: width .6s ease;
}

.nk-progress-label {
  font-size: 12px;
  color: var(--nk-muted);
}

.nk-progress-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.nk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--nk-radius-button);
  font-family: var(--nk-font-ui);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background .2s, color .2s, border-color .2s, opacity .2s;
  text-decoration: none;
}

.nk-btn--primary {
  background: var(--nk-black);
  color: var(--nk-gold);
  border-color: var(--nk-black);
}

.nk-btn--primary:hover { background: var(--nk-gold-dark); border-color: var(--nk-gold-dark); color: #fff; }

.nk-btn--ghost {
  background: transparent;
  color: var(--nk-gold);
  border-color: var(--nk-gold);
}

.nk-btn--ghost:hover { background: var(--nk-gold); color: #fff; }

.nk-btn--full { width: 100%; }
.nk-btn--sm { padding: 8px 16px; font-size: 13px; }
.nk-btn:disabled { opacity: .5; cursor: not-allowed; }

/* ── Badges ──────────────────────────────────────────────────────────────── */
.nk-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
}

.nk-badge--success { background: #d4f0dc; color: var(--nk-success); }
.nk-badge--warning { background: #fdf0d4; color: var(--nk-warning); }

/* ── Login ────────────────────────────────────────────────────────────────── */
.nk-login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.nk-login-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(.4);
}

.nk-login-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(9,9,9,.7) 0%, rgba(110,69,23,.4) 100%);
}

.nk-login-box {
  position: relative;
  z-index: 2;
  background: var(--nk-card);
  border-radius: var(--nk-radius);
  border: 1px solid var(--nk-border);
  box-shadow: 0 32px 80px rgba(0,0,0,.4);
  padding: 48px 40px;
  width: 100%;
  max-width: 440px;
  margin: 20px;
}

.nk-login-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 36px;
}

.nk-login-logo-img {
  width: 52px;
  height: 52px;
  object-fit: contain;
}

.nk-login-eyebrow {
  display: block;
  font-size: 9px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--nk-gold);
  margin-bottom: 4px;
}

.nk-login-title {
  font-family: var(--nk-font-h);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
}

.nk-login-form { display: flex; flex-direction: column; gap: 18px; }

.nk-field { display: flex; flex-direction: column; gap: 6px; }
.nk-field label { font-size: 13px; font-weight: 600; color: var(--nk-muted); letter-spacing: .03em; }
.nk-field input, .nk-field textarea, .nk-field select, .nk-input {
  padding: 12px 14px;
  border: 1.5px solid var(--nk-border);
  border-radius: 8px;
  font-family: var(--nk-font-b);
  font-size: 14px;
  background: var(--nk-bg);
  color: var(--nk-text);
  transition: border-color .2s;
  width: 100%;
}

.nk-field input:focus, .nk-input:focus {
  outline: none;
  border-color: var(--nk-gold);
  box-shadow: 0 0 0 3px rgba(168,117,38,.12);
}

.nk-login-row { display: flex; justify-content: space-between; align-items: center; }

.nk-checkbox { display: flex; align-items: center; gap: 8px; font-size: 13px; cursor: pointer; }
.nk-checkbox input[type=checkbox] { accent-color: var(--nk-gold); width: 16px; height: 16px; }

.nk-link { color: var(--nk-gold); font-size: 13px; }
.nk-link:hover { text-decoration: underline; }
.nk-link--muted { color: var(--nk-muted); font-size: 13px; }

.nk-login-hint { font-size: 12px; color: var(--nk-muted); text-align: center; margin-top: 20px; }

.nk-notice {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 16px;
}
.nk-notice--error { background: #fde8e8; color: #a94442; border: 1px solid #f5c6cb; }
.nk-notice--success { background: #d4edda; color: #155724; }

/* ── Empty state ─────────────────────────────────────────────────────────── */
.nk-empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--nk-muted);
}
.nk-empty-img { width: 100px; opacity: .5; margin-bottom: 20px; }

/* ── Course hero ──────────────────────────────────────────────────────────── */
.nk-course-hero {
  height: 280px;
  background-size: cover;
  background-position: center;
  border-radius: var(--nk-radius);
  overflow: hidden;
  margin-bottom: 32px;
  position: relative;
}

.nk-course-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(9,9,9,.85) 0%, rgba(9,9,9,.2) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
}

.nk-course-hero__title {
  font-family: var(--nk-font-h);
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

/* ── Course layout ────────────────────────────────────────────────────────── */
.nk-course-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}

.nk-course-desc { font-size: 15px; line-height: 1.7; color: var(--nk-muted); margin-bottom: 16px; }

/* ── Accordion ────────────────────────────────────────────────────────────── */
.nk-accordion {
  border: 1px solid var(--nk-border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 12px;
  background: var(--nk-card);
}

.nk-accordion__header {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 16px 20px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--nk-font-b);
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  color: var(--nk-text);
  transition: background .2s;
}

.nk-accordion__header:hover { background: rgba(168,117,38,.05); }

.nk-accordion__num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--nk-black);
  color: var(--nk-gold);
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nk-accordion__title { flex: 1; }
.nk-accordion__meta { font-size: 12px; color: var(--nk-muted); font-weight: 400; }
.nk-accordion__arrow { font-size: 18px; color: var(--nk-muted); transition: transform .3s; }
.nk-accordion[data-open="false"] .nk-accordion__arrow { transform: rotate(-90deg); }
.nk-accordion[data-open="false"] .nk-accordion__body { display: none; }

.nk-lesson-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-top: 1px solid var(--nk-border);
  color: var(--nk-text);
  font-size: 14px;
  text-decoration: none;
  transition: background .15s;
}

.nk-lesson-row:hover { background: rgba(168,117,38,.05); text-decoration: none; }
.nk-lesson-row__icon { font-size: 16px; width: 20px; text-align: center; }
.nk-lesson-row__title { flex: 1; }
.nk-lesson-row--completed .nk-lesson-row__icon { color: var(--nk-success); }
.nk-lesson-row--in_progress .nk-lesson-row__icon { color: var(--nk-warning); }

/* ── Widget ────────────────────────────────────────────────────────────────── */
.nk-widget {
  background: var(--nk-card);
  border: 1px solid var(--nk-border);
  border-radius: var(--nk-radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--nk-shadow-card);
}

.nk-widget__title {
  font-family: var(--nk-font-h);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--nk-muted);
  letter-spacing: .03em;
}

/* ── Circle progress ────────────────────────────────────────────────────────── */
.nk-big-progress {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nk-circle-progress { width: 100px; height: 100px; }

.nk-big-progress__label {
  position: absolute;
  font-family: var(--nk-font-h);
  font-size: 22px;
  font-weight: 700;
  color: var(--nk-gold);
}

/* ── Lesson layout ────────────────────────────────────────────────────────── */
.nk-content--lesson .nk-page-inner { padding: 0; max-width: none; }

.nk-lesson-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 0;
  height: calc(100vh - 60px);
  overflow: hidden;
}

.nk-lesson-main {
  overflow-y: auto;
  background: var(--nk-bg);
}

.nk-lesson-sidebar {
  overflow-y: auto;
  background: var(--nk-card);
  border-left: 1px solid var(--nk-border);
  padding: 24px 16px;
}

/* ── Video ────────────────────────────────────────────────────────────────── */
.nk-video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  background: #000;
}

.nk-video-iframe,
.nk-video-player {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.nk-video-player { background: #000; }

.nk-lesson-banner {
  height: 260px;
  background-size: cover;
  background-position: center;
  opacity: .7;
}

/* ── Lesson body ────────────────────────────────────────────────────────── */
.nk-lesson-body { padding: 28px 36px; }

.nk-lesson-title {
  font-family: var(--nk-font-h);
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 24px;
}

/* ── Tabs ────────────────────────────────────────────────────────────────── */
.nk-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--nk-border);
  margin-bottom: 24px;
}

.nk-tab {
  padding: 10px 20px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--nk-font-b);
  font-size: 14px;
  font-weight: 500;
  color: var(--nk-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color .2s, border-color .2s;
}

.nk-tab.is-active {
  color: var(--nk-gold);
  border-bottom-color: var(--nk-gold);
}

.nk-tab-panel { display: none; }
.nk-tab-panel.is-active { display: block; }

/* ── Lesson content ─────────────────────────────────────────────────────── */
.nk-lesson-content { font-size: 15px; line-height: 1.8; color: var(--nk-text); }
.nk-lesson-content h2,h3,h4 { font-family: var(--nk-font-h); }

/* ── Audio ────────────────────────────────────────────────────────────────── */
.nk-audio-wrap { margin-top: 24px; }
.nk-audio-player { width: 100%; margin-top: 8px; }

/* ── Notes ────────────────────────────────────────────────────────────────── */
.nk-notes-area {
  width: 100%;
  min-height: 200px;
  padding: 14px;
  border: 1.5px solid var(--nk-border);
  border-radius: 8px;
  font-family: var(--nk-font-b);
  font-size: 14px;
  background: var(--nk-bg);
  resize: vertical;
}

/* ── Homework ──────────────────────────────────────────────────────────────── */
.nk-homework-form { display: flex; flex-direction: column; gap: 16px; max-width: 600px; }
.nk-hw-status { font-size: 13px; margin-top: 4px; }

/* ── Lesson actions ────────────────────────────────────────────────────────── */
.nk-lesson-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--nk-border);
}

/* ── Mini lesson nav ────────────────────────────────────────────────────── */
.nk-mini-accordion { margin-bottom: 12px; }

.nk-mini-accordion__header {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--nk-muted);
  padding: 8px 0;
  border-bottom: 1px solid var(--nk-border);
  margin-bottom: 6px;
}

.nk-mini-lesson {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--nk-muted);
  text-decoration: none;
  transition: background .15s, color .15s;
  line-height: 1.4;
}

.nk-mini-lesson:hover { background: rgba(168,117,38,.08); color: var(--nk-text); text-decoration: none; }
.nk-mini-lesson.is-active { background: rgba(168,117,38,.12); color: var(--nk-gold); font-weight: 600; }
.nk-mini-lesson--completed { color: var(--nk-success); }

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .nk-course-layout { grid-template-columns: 1fr; }
  .nk-lesson-layout { grid-template-columns: 1fr; height: auto; }
  .nk-lesson-sidebar { border-left: none; border-top: 1px solid var(--nk-border); }
}

@media (max-width: 768px) {
  .nk-sidebar {
    transform: translateX(calc(-1 * var(--nk-sidebar-w)));
  }
  .nk-sidebar.is-open {
    transform: translateX(0);
  }
  .nk-sidebar-overlay.is-visible { display: block; }

  .nk-content { margin-left: 0; }
  .nk-hamburger { display: flex; }

  .nk-page-inner { padding: 20px 16px; }
  .nk-courses-grid { grid-template-columns: 1fr; }
  .nk-course-hero { height: 200px; }
  .nk-course-hero__title { font-size: 24px; }
  .nk-lesson-body { padding: 20px 16px; }
  .nk-login-box { padding: 32px 24px; }
}