/* ============================================================
   LearnWBG — Global Stylesheet
   assets/css/style.css
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Afacad:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

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

:root {
  --yellow:       #FFD700;
  --yellow-dark:  #B8960A;
  --yellow-light: #FFF8D6;
  --black:        #000000;
  --gray-950:     #0a0a0a;
  --gray-900:     #111111;
  --gray-800:     #1a1a1a;
  --gray-700:     #252525;
  --gray-600:     #333333;
  --gray-500:     #555555;
  --gray-400:     #777777;
  --gray-300:     #999999;
  --gray-200:     #bbbbbb;
  --gray-100:     #dddddd;
  --white:        #ffffff;
  --green:        #00cc66;
  --green-dark:   #003d1a;
  --red:          #ff4444;
  --red-dark:     #2a0000;
  --radius-sm:    6px;
  --radius:       8px;
  --radius-lg:    12px;
  --radius-xl:    16px;
  --sidebar-w:    240px;
  --topbar-h:     64px;
  --transition:   0.18s ease;
}

html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: 'Afacad', sans-serif;
  background: var(--gray-950);
  color: var(--white);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--yellow); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

/* ── Typography ─────────────────── */
h1 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; }
h2 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 600; }
p  { color: var(--gray-200); font-size: 0.95rem; }

/* ── Buttons ─────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 10px 20px; border-radius: var(--radius);
  font-family: 'Afacad', sans-serif; font-size: 0.95rem; font-weight: 600;
  cursor: pointer; border: none; transition: all var(--transition);
  white-space: nowrap; text-decoration: none; line-height: 1;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary  { background: var(--yellow); color: var(--black); }
.btn-primary:hover { background: #ffe033; }
.btn-outline  { background: transparent; color: var(--yellow); border: 1.5px solid var(--yellow); }
.btn-outline:hover { background: var(--yellow); color: var(--black); }
.btn-ghost    { background: transparent; color: var(--gray-200); border: 1px solid var(--gray-600); }
.btn-ghost:hover { border-color: var(--gray-300); color: var(--white); }
.btn-danger   { background: transparent; color: var(--red); border: 1px solid var(--red); }
.btn-danger:hover { background: var(--red-dark); }
.btn-sm  { padding: 6px 14px; font-size: 0.85rem; }
.btn-lg  { padding: 14px 28px; font-size: 1.05rem; }
.btn-full{ width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ── Forms ───────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.form-label {
  font-size: 0.82rem; font-weight: 600; color: var(--gray-200);
  letter-spacing: 0.5px; text-transform: uppercase;
}
.form-control {
  background: var(--gray-800); border: 1px solid var(--gray-600);
  border-radius: var(--radius); padding: 11px 14px;
  color: var(--white); font-size: 0.95rem;
  font-family: 'Afacad', sans-serif;
  outline: none; transition: border var(--transition); width: 100%;
}
.form-control:focus { border-color: var(--yellow); }
.form-control::placeholder { color: var(--gray-500); }
.form-control option { background: var(--gray-800); }
textarea.form-control { resize: vertical; min-height: 90px; }
.form-hint  { font-size: 0.8rem; color: var(--gray-400); margin-top: 3px; }
.form-error { font-size: 0.82rem; color: var(--red); margin-top: 3px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Alerts ──────────────────────── */
.alert {
  padding: 12px 16px; border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 500; margin-bottom: 18px;
  border-left: 4px solid; display: flex; align-items: center; gap: 8px;
}
.alert-success { background: var(--green-dark);  color: var(--green);  border-color: var(--green); }
.alert-error   { background: var(--red-dark);     color: var(--red);    border-color: var(--red); }
.alert-warning { background: #1a1400;             color: var(--yellow); border-color: var(--yellow); }
.alert-info    { background: #001a3a;             color: #66aaff;       border-color: #4488ee; }

/* ── Cards ───────────────────────── */
.card { background: var(--gray-800); border: 1px solid var(--gray-700); border-radius: var(--radius-lg); overflow: hidden; }
.card-body   { padding: 20px; }
.card-header { padding: 16px 20px; border-bottom: 1px solid var(--gray-700); font-weight: 600; display: flex; align-items: center; justify-content: space-between; }
.card-footer { padding: 14px 20px; border-top: 1px solid var(--gray-700); }

/* ── Badges ──────────────────────── */
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.3px;
}
.badge-yellow      { background: #1a1400;        color: var(--yellow); }
.badge-green       { background: var(--green-dark); color: var(--green); }
.badge-red         { background: var(--red-dark); color: #ff8888; }
.badge-gray        { background: var(--gray-700); color: var(--gray-200); }
.badge-beginner    { background: #003d1a; color: #00cc66; }
.badge-intermediate{ background: #1a1400; color: #FFD700; }
.badge-advanced    { background: var(--red-dark); color: #ff8888; }
.badge-published   { background: #003d1a; color: #00cc66; }
.badge-draft       { background: var(--gray-700); color: var(--gray-300); }

/* ── Progress ────────────────────── */
.progress    { height: 6px;  background: var(--gray-700); border-radius: 3px; overflow: hidden; }
.progress-sm { height: 4px; }
.progress-lg { height: 10px; }
.progress-bar { height: 100%; background: var(--yellow); border-radius: 3px; transition: width 0.4s ease; }

/* ── Avatar ──────────────────────── */
.avatar {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; font-weight: 700; flex-shrink: 0;
  background: var(--yellow); color: var(--black); overflow: hidden;
}
.avatar-sm { width: 32px; height: 32px; font-size: 0.75rem; }
.avatar-md { width: 42px; height: 42px; font-size: 0.9rem; }
.avatar-lg { width: 64px; height: 64px; font-size: 1.2rem; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }

/* ── App Layout ──────────────────── */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w); flex-shrink: 0;
  background: var(--gray-900); border-right: 1px solid var(--gray-700);
  display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; bottom: 0;
  z-index: 100; overflow-y: auto;
  transition: transform var(--transition);
}
.sidebar-logo {
  padding: 20px; border-bottom: 1px solid var(--gray-700);
  display: flex; align-items: center; gap: 10px; flex-shrink: 0;
}
.logo-text { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.5px; }
.logo-text span { color: var(--yellow); }

.sidebar-section { padding: 16px 20px 6px; font-size: 0.7rem; font-weight: 700; color: var(--gray-500); letter-spacing: 1px; text-transform: uppercase; }

.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 20px; cursor: pointer; font-size: 0.92rem;
  color: var(--gray-300); border-left: 3px solid transparent;
  transition: all var(--transition); text-decoration: none;
}
.nav-item:hover { background: var(--gray-800); color: var(--white); text-decoration: none; }
.nav-item.active { background: var(--gray-800); color: var(--yellow); border-left-color: var(--yellow); }
.nav-icon { font-size: 1rem; width: 20px; text-align: center; flex-shrink: 0; }

.sidebar-footer {
  margin-top: auto; padding: 16px 20px;
  border-top: 1px solid var(--gray-700); flex-shrink: 0;
}
.sidebar-user { display: flex; align-items: center; gap: 10px; }
.user-name { font-size: 0.88rem; font-weight: 600; }
.user-role { font-size: 0.75rem; color: var(--gray-400); }

.main-content { margin-left: var(--sidebar-w); flex: 1; display: flex; flex-direction: column; min-height: 100vh; }

.topbar {
  height: var(--topbar-h); background: var(--gray-900);
  border-bottom: 1px solid var(--gray-700);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; position: sticky; top: 0; z-index: 90;
}
.topbar-title { font-size: 1.05rem; font-weight: 600; }
.topbar-right { display: flex; align-items: center; gap: 14px; }
.topbar-search {
  background: var(--gray-800); border: 1px solid var(--gray-700);
  border-radius: var(--radius); padding: 8px 14px;
  color: var(--white); font-family: 'Afacad', sans-serif; font-size: 0.88rem;
  outline: none; width: 200px; transition: border var(--transition);
}
.topbar-search:focus { border-color: var(--yellow); }

.page-content { padding: 28px 24px; flex: 1; }
.page-header  { margin-bottom: 24px; }
.page-header h2 { margin-bottom: 4px; }
.page-header p  { color: var(--gray-400); font-size: 0.9rem; margin: 0; }

/* ── Stats Grid ──────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px; margin-bottom: 28px;
}
.stat-card {
  background: var(--gray-800); border: 1px solid var(--gray-700);
  border-radius: var(--radius-lg); padding: 18px 20px;
}
.stat-label { font-size: 0.75rem; color: var(--gray-400); font-weight: 700; margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--yellow); line-height: 1; }
.stat-sub   { font-size: 0.78rem; color: var(--gray-500); margin-top: 5px; }

/* ── Course Cards ────────────────── */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 20px;
}
.course-card {
  background: var(--gray-800); border: 1px solid var(--gray-700);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: all var(--transition); display: flex; flex-direction: column;
}
.course-card:hover { border-color: var(--yellow); transform: translateY(-3px); box-shadow: 0 8px 24px rgba(255,215,0,0.08); }
.course-thumb {
  height: 155px; position: relative;
  display: flex; align-items: center; justify-content: center;
  background: var(--gray-700);
}
.course-thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb-icon { font-size: 3rem; }
.level-badge { position: absolute; top: 10px; right: 10px; }
.course-body   { padding: 16px; flex: 1; display: flex; flex-direction: column; }
.course-title  { font-size: 1rem; font-weight: 600; margin-bottom: 4px; color: var(--white); }
.course-meta   { font-size: 0.82rem; color: var(--gray-400); margin-bottom: 10px; }
.course-footer {
  margin-top: auto; padding-top: 12px;
  display: flex; justify-content: space-between; align-items: center;
  border-top: 1px solid var(--gray-700);
}

/* ── Lesson List ─────────────────── */
.lesson-list { display: flex; flex-direction: column; gap: 8px; }
.lesson-item {
  background: var(--gray-800); border: 1px solid var(--gray-700);
  border-radius: var(--radius); padding: 13px 16px;
  display: flex; align-items: center; gap: 14px;
  cursor: pointer; transition: all var(--transition);
}
.lesson-item:hover { border-color: var(--gray-500); }
.lesson-item.active    { border-color: var(--yellow); background: #1a1400; }
.lesson-item.completed .lesson-icon { background: var(--green-dark); color: var(--green); }
.lesson-icon {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--gray-700); display: flex;
  align-items: center; justify-content: center;
  font-size: 0.9rem; flex-shrink: 0; color: var(--gray-200);
}
.lesson-info  { flex: 1; min-width: 0; }
.lesson-name  { font-size: 0.9rem; font-weight: 500; margin-bottom: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lesson-dur   { font-size: 0.78rem; color: var(--gray-400); }
.lesson-check { font-size: 0.85rem; color: var(--green); }

/* ── Tables ──────────────────────── */
.table-wrap { background: var(--gray-800); border: 1px solid var(--gray-700); border-radius: var(--radius-lg); overflow: hidden; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
thead th {
  padding: 13px 16px; text-align: left;
  font-size: 0.73rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.5px; color: var(--gray-400);
  border-bottom: 1px solid var(--gray-700); white-space: nowrap;
}
tbody td { padding: 13px 16px; border-bottom: 1px solid var(--gray-700); color: var(--gray-200); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--gray-700); }

/* ── Video wrapper ───────────────── */
.video-wrapper {
  background: var(--black); border-radius: var(--radius-lg);
  overflow: hidden; position: relative; aspect-ratio: 16/9;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; border: 1px solid var(--gray-700);
}
.video-wrapper video,
.video-wrapper iframe { width: 100%; height: 100%; border: none; }
.video-placeholder {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  color: var(--gray-400); cursor: pointer;
}
.play-btn {
  width: 60px; height: 60px; border-radius: 50%;
  background: var(--yellow); display: flex;
  align-items: center; justify-content: center;
  font-size: 1.4rem; transition: var(--transition);
}
.play-btn:hover { background: #ffe033; }

/* ── Auth pages ──────────────────── */
.auth-page {
  min-height: 100vh; display: flex;
  align-items: center; justify-content: center;
  padding: 24px; background: var(--gray-950);
}
.auth-box {
  background: var(--gray-900); border: 1px solid var(--gray-700);
  border-radius: var(--radius-xl); padding: 40px;
  width: 100%; max-width: 440px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.auth-logo { text-align: center; margin-bottom: 28px; }
.auth-logo .logo-text { font-size: 1.8rem; }
.auth-logo p { color: var(--gray-400); font-size: 0.88rem; margin-top: 5px; }
.auth-tabs {
  display: flex; background: var(--gray-800);
  border-radius: var(--radius); padding: 4px; margin-bottom: 28px;
}
.auth-tab {
  flex: 1; padding: 9px; text-align: center; cursor: pointer;
  font-size: 0.9rem; font-weight: 600; border-radius: 6px;
  color: var(--gray-400); transition: all var(--transition); border: none;
  background: transparent; font-family: 'Afacad', sans-serif;
}
.auth-tab.active { background: var(--yellow); color: var(--black); }
.role-select-wrap { display: flex; gap: 10px; margin-bottom: 18px; }
.role-option {
  flex: 1; padding: 12px; border: 1.5px solid var(--gray-600);
  border-radius: var(--radius); text-align: center; cursor: pointer;
  transition: all var(--transition); font-size: 0.88rem; font-weight: 600;
  color: var(--gray-300);
}
.role-option:hover { border-color: var(--gray-400); }
.role-option.selected { border-color: var(--yellow); color: var(--yellow); background: #1a1400; }
.role-icon { font-size: 1.5rem; margin-bottom: 4px; }

/* ── Modal ───────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.8);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; padding: 20px;
}
.modal-overlay.hidden { display: none; }
.modal {
  background: var(--gray-800); border: 1px solid var(--gray-600);
  border-radius: var(--radius-xl); padding: 28px;
  width: 100%; max-width: 560px; max-height: 90vh; overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}
.modal-header {
  display: flex; justify-content: space-between;
  align-items: center; margin-bottom: 20px;
}
.modal-close {
  background: none; border: none; color: var(--gray-400);
  font-size: 1.4rem; cursor: pointer; padding: 4px; line-height: 1;
}
.modal-close:hover { color: var(--white); }

/* ── Hamburger ───────────────────── */
.hamburger {
  display: none; background: none; border: none;
  color: var(--white); font-size: 1.5rem; cursor: pointer;
}
.sidebar-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.65); z-index: 99;
}

/* ── Utilities ───────────────────── */
.divider  { height: 1px; background: var(--gray-700); margin: 20px 0; }
.text-yellow { color: var(--yellow); }
.text-green  { color: var(--green); }
.text-red    { color: var(--red); }
.text-muted  { color: var(--gray-400); }
.text-center { text-align: center; }
.text-sm     { font-size: 0.85rem; }
.fw-600      { font-weight: 600; }
.mt-1 { margin-top: 8px; }  .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; }
.gap-1 { gap: 8px; } .gap-2 { gap: 16px; }
.flex { display: flex; }
.flex-center  { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.two-col   { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.three-col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.empty-state { text-align: center; padding: 60px 20px; color: var(--gray-400); }
.empty-state .es-icon { font-size: 3rem; margin-bottom: 12px; }
.hidden { display: none !important; }

/* ── Course view layout ──────────── */
.course-view-layout { display: grid; grid-template-columns: 1fr 320px; gap: 24px; align-items: start; }

/* ── Quiz styles ─────────────────── */
.quiz-question { font-size: 1.05rem; font-weight: 600; margin-bottom: 20px; line-height: 1.5; }
.quiz-options  { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.quiz-opt {
  padding: 13px 16px; border: 1.5px solid var(--gray-600);
  border-radius: var(--radius); cursor: pointer; font-size: 0.95rem;
  transition: all var(--transition); background: var(--gray-700);
  display: flex; align-items: center; gap: 12px;
}
.quiz-opt:hover    { border-color: var(--yellow); }
.quiz-opt.selected { border-color: var(--yellow); background: #1a1400; color: var(--yellow); }
.quiz-opt.correct  { border-color: var(--green); background: var(--green-dark); color: var(--green); }
.quiz-opt.wrong    { border-color: var(--red); background: var(--red-dark); color: var(--red); }
.quiz-result {
  padding: 14px 18px; border-radius: var(--radius);
  font-size: 0.92rem; font-weight: 600; margin-bottom: 16px;
}
.quiz-result.pass { background: var(--green-dark); border: 1px solid var(--green); color: var(--green); }
.quiz-result.fail { background: var(--red-dark);   border: 1px solid var(--red);   color: var(--red); }
.score-circle {
  width: 90px; height: 90px; border-radius: 50%;
  border: 4px solid var(--yellow); display: flex;
  align-items: center; justify-content: center;
  font-size: 1.6rem; font-weight: 700; color: var(--yellow);
  margin: 0 auto 16px;
}

/* ── File upload area ────────────── */
.upload-area {
  border: 2px dashed var(--gray-600); border-radius: var(--radius-lg);
  padding: 32px; text-align: center; cursor: pointer;
  transition: all var(--transition); color: var(--gray-400);
}
.upload-area:hover { border-color: var(--yellow); color: var(--gray-200); }
.upload-area.drag-over { border-color: var(--yellow); background: #1a1400; }
.upload-icon { font-size: 2rem; margin-bottom: 8px; }

/* ── Responsive ──────────────────── */
@media (max-width: 1024px) {
  .course-view-layout { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.show { display: block; }
  .main-content { margin-left: 0; }
  .hamburger { display: block; }
  .two-col, .three-col { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .page-content { padding: 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .courses-grid { grid-template-columns: 1fr; }
  .auth-box { padding: 24px 18px; }
  .topbar { padding: 0 16px; }
  .topbar-search { display: none; }
  .form-row { grid-template-columns: 1fr; }
}