/* ================================================
   Domo's 0nline Academy – Main Stylesheet
   ================================================ */

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

:root {
  --bg:       #0d1117;
  --surface:  #161b22;
  --border:   #30363d;
  --accent:   #58a6ff;
  --accent2:  #3fb950;
  --danger:   #f85149;
  --warning:  #d29922;
  --text:     #c9d1d9;
  --muted:    #8b949e;
  --radius:   8px;
}

body { background: var(--bg); color: var(--text); font-family: 'Segoe UI', system-ui, sans-serif; line-height: 1.6; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Navbar */
.navbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: .75rem 2rem; background: var(--surface);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100;
}
.brand { font-size: 1.25rem; font-weight: 700; color: var(--accent); }
.nav-links { display: flex; gap: 1.5rem; }
.nav-links a { color: var(--text); font-size: .95rem; }
.nav-links a:hover { color: var(--accent); text-decoration: none; }

/* Container */
.container { max-width: 1100px; margin: 0 auto; padding: 2rem 1.5rem; }

/* Alerts */
.alert { padding: .75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; border: 1px solid; }
.alert-success { background: #0f3a1a; border-color: var(--accent2); color: var(--accent2); }
.alert-danger  { background: #3b1212; border-color: var(--danger);  color: var(--danger); }
.alert-warning { background: #332700; border-color: var(--warning); color: var(--warning); }
.alert-info    { background: #0d2236; border-color: var(--accent);  color: var(--accent); }

/* Cards */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem; margin-bottom: 1.25rem;
}
.card h2, .card h3 { color: var(--accent); margin-bottom: .5rem; }
.card p { color: var(--muted); }

/* Buttons */
.btn {
  display: inline-block; padding: .5rem 1.1rem; border-radius: var(--radius);
  font-size: .9rem; cursor: pointer; border: 1px solid transparent;
  transition: opacity .15s;
}
.btn:hover { opacity: .85; text-decoration: none; }
.btn-primary  { background: var(--accent);  color: #0d1117; }
.btn-success  { background: var(--accent2); color: #0d1117; }
.btn-danger   { background: var(--danger);  color: #fff; }
.btn-warning  { background: var(--warning); color: #0d1117; }
.btn-outline  { background: transparent; border-color: var(--border); color: var(--text); }
.btn-sm { padding: .3rem .75rem; font-size: .8rem; }

/* Forms */
.form-group { margin-bottom: 1.1rem; }
label { display: block; margin-bottom: .3rem; color: var(--muted); font-size: .9rem; }
input[type=text], input[type=email], input[type=password], input[type=number],
select, textarea {
  width: 100%; padding: .55rem .8rem; background: var(--bg);
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text); font-size: .95rem;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent);
}
textarea { min-height: 200px; font-family: 'Courier New', monospace; resize: vertical; }
.form-check { display: flex; align-items: center; gap: .5rem; }
.form-check input { width: auto; }

/* Course grid */
.course-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.25rem;
}
.course-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.25rem; display: flex; flex-direction: column; gap: .5rem;
}
.course-card h3 { color: var(--accent); }
.course-card .meta { font-size: .8rem; color: var(--muted); }
.course-card .actions { margin-top: auto; padding-top: .75rem; display: flex; gap: .5rem; }

/* Badge */
.badge {
  display: inline-block; padding: .2rem .6rem; border-radius: 2rem;
  font-size: .75rem; font-weight: 600;
}
.badge-beginner     { background: #1a3a1e; color: var(--accent2); }
.badge-intermediate { background: #2e2200; color: var(--warning); }
.badge-advanced     { background: #3b0f0f; color: var(--danger); }

/* Lesson content (rendered markdown) */
.lesson-body {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 2rem; line-height: 1.8;
}
.lesson-body h1,.lesson-body h2,.lesson-body h3 { color: var(--accent); margin: 1.2rem 0 .5rem; }
.lesson-body code {
  background: #0d1117; border: 1px solid var(--border);
  border-radius: 4px; padding: .1em .4em; font-size: .9em; color: #e3b341;
}
.lesson-body pre {
  background: #0d1117; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.2rem; overflow-x: auto; margin: 1rem 0;
}
.lesson-body pre code { background: none; border: none; padding: 0; }
.lesson-body blockquote {
  border-left: 4px solid var(--accent); padding-left: 1rem;
  color: var(--muted); margin: 1rem 0;
}
.lesson-body table { width: 100%; border-collapse: collapse; margin: 1rem 0; }
.lesson-body th,
.lesson-body td { border: 1px solid var(--border); padding: .5rem .75rem; }
.lesson-body th { background: var(--bg); color: var(--accent); }

/* Test / Quiz */
.question-block {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1.25rem;
}
.question-block .q-text { font-weight: 600; margin-bottom: .75rem; }
.choice-label {
  display: flex; align-items: center; gap: .6rem;
  padding: .5rem .75rem; border-radius: var(--radius);
  border: 1px solid var(--border); margin-bottom: .4rem; cursor: pointer;
}
.choice-label:hover { border-color: var(--accent); }
.choice-label input { cursor: pointer; }

/* Result indicators */
.result-correct { border-color: var(--accent2) !important; }
.result-wrong   { border-color: var(--danger)  !important; }

/* Progress bar */
.progress-bar-wrap { background: var(--border); border-radius: 2rem; height: 10px; }
.progress-bar { background: var(--accent2); height: 10px; border-radius: 2rem; transition: width .3s; }

/* Sidebar layout */
.lesson-layout { display: grid; grid-template-columns: 260px 1fr; gap: 2rem; align-items: start; }
.sidebar { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; }
.sidebar h4 { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; margin-bottom: .75rem; }
.sidebar-lesson { display: flex; align-items: center; gap: .5rem; padding: .4rem .5rem; border-radius: 4px; font-size: .9rem; }
.sidebar-lesson.active { background: var(--border); color: var(--accent); }
.sidebar-lesson .check { color: var(--accent2); }

/* Footer */
.footer { text-align: center; padding: 2rem; color: var(--muted); font-size: .85rem; border-top: 1px solid var(--border); margin-top: 3rem; }

/* Admin table */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: .6rem .9rem; border: 1px solid var(--border); text-align: left; font-size: .9rem; }
.table th { background: var(--bg); color: var(--accent); }
.table tr:hover td { background: #1c2128; }

/* Section headings */
h1 { font-size: 1.8rem; margin-bottom: 1rem; color: var(--text); }
h2 { font-size: 1.35rem; margin-bottom: .75rem; }
.page-header { margin-bottom: 2rem; }
.page-header p { color: var(--muted); margin-top: .3rem; }

/* Utility */
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }
.flex { display: flex; }
.gap-1 { gap: .5rem; }
.gap-2 { gap: 1rem; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.text-muted { color: var(--muted); font-size: .9rem; }
.text-success { color: var(--accent2); }
.text-danger  { color: var(--danger); }
.score-big { font-size: 3rem; font-weight: 700; }

/* ================================================
   Classroom
   ================================================ */
.classroom-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1.25rem;
  min-height: 500px;
}
@media (max-width: 800px) {
  .classroom-layout { grid-template-columns: 1fr; }
}
.stream-pane {
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
}
.stream-pane video,
.stream-pane iframe {
  width: 100%;
  height: 100%;
  min-height: 420px;
  border: none;
  display: block;
}
.stream-offline {
  color: var(--muted);
  text-align: center;
  padding: 3rem;
}
.chat-pane {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  max-height: 600px;
}
.chat-pane h4 {
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--accent);
  font-size: .95rem;
  flex-shrink: 0;
}
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: .75rem;
  display: flex;
  flex-direction: column;
  gap: .35rem;
}
.chat-msg { font-size: .85rem; line-height: 1.4; }
.chat-user { font-weight: 700; color: var(--accent); margin-right: .25rem; }
.chat-time { color: var(--muted); font-size: .75rem; margin-right: .35rem; }
.chat-content { color: var(--text); }
.chat-input-row {
  display: flex;
  gap: .5rem;
  padding: .6rem .75rem;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.chat-input-row input {
  flex: 1;
  min-width: 0;
  padding: .35rem .6rem;
  font-size: .875rem;
}