/*
 * Tabiya Program Associate Screening Exercise — stylesheet.
 *
 * Brand palette (approximated from Tabiya_Logo_RGB_Chromatic_ImageWord.png).
 * If the brand guide specifies different exact values, update the
 * custom properties in :root below — everything else cascades from them.
 */
:root {
  /* Tabiya brand */
  --tabiya-navy:       #002147;   /* Oxford navy — wordmark */
  --tabiya-navy-dark:  #001530;   /* Pressed / hover */
  --tabiya-green:      #00E676;   /* Bright green — logomark */
  --tabiya-green-dark: #00B35C;   /* Pressed / hover */
  --tabiya-teal:       #2D7A6E;   /* Teal shadow layer in the logomark */

  /* Neutrals (slate scale) */
  --ink:     #0F172A;             /* Body text, navy-tinted near-black */
  --muted:   #64748B;             /* Secondary text */
  --bg:      #F8FAFC;             /* Page background */
  --card:    #FFFFFF;             /* Cards, topbar */
  --border:  #E2E8F0;             /* Hairlines */

  /* Semantic roles */
  --accent:       var(--tabiya-navy);
  --accent-dark:  var(--tabiya-navy-dark);
  --cta:          var(--tabiya-green);
  --cta-dark:     var(--tabiya-green-dark);
  --warn:         #D97706;        /* Amber-600 */
  --critical:     #DC2626;        /* Red-600 */
  --ok:           var(--tabiya-green-dark);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1.5rem;
  background: var(--card);
  border-bottom: 2px solid var(--tabiya-navy);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.brand img {
  display: block;
  height: 32px;
  width: auto;
}
.subtitle {
  color: var(--muted);
  font-weight: 500;
  padding-left: 1rem;
  border-left: 1px solid var(--border);
}
.topbar .timer { margin-left: auto; font-size: 1.1rem; color: var(--ink); }
.timer strong { color: var(--tabiya-navy); font-variant-numeric: tabular-nums; }
.timer.warn strong { color: var(--warn); }
.timer.critical strong { color: var(--critical); }
.save-status { color: var(--muted); font-size: 0.85rem; }

.container { max-width: 1200px; margin: 0 auto; padding: 1.5rem; }

h1, h2, h3 { color: var(--tabiya-navy); }
a { color: var(--tabiya-navy); }
a:hover { color: var(--tabiya-green-dark); }

.md-pre {
  white-space: pre-wrap;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.95rem;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 1rem 1.25rem;
  border-radius: 6px;
}

/* Rendered markdown blocks (intro, packet panels). */
.md-body { font-size: 0.97rem; }
.md-body h1 { font-size: 1.5rem; margin: 0 0 0.75rem; }
.md-body h2 { font-size: 1.2rem; margin: 1.25rem 0 0.5rem; }
.md-body h3 { font-size: 1.02rem; margin: 1rem 0 0.4rem; }
.md-body p  { margin: 0.5rem 0; }
.md-body ul, .md-body ol { margin: 0.5rem 0 0.75rem 1.25rem; padding: 0; }
.md-body li { margin: 0.2rem 0; }
.md-body blockquote {
  margin: 0.5rem 0;
  padding: 0.25rem 0.9rem;
  color: var(--ink);
  border-left: 3px solid var(--border);
  background: #F1F5F9;
  border-radius: 0 4px 4px 0;
}
.md-body code {
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 0.9em;
  background: #F1F5F9;
  padding: 0.05em 0.35em;
  border-radius: 3px;
}
.md-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 0.75rem 0;
  font-size: 0.9rem;
}
.md-body th, .md-body td {
  border: 1px solid var(--border);
  padding: 0.35rem 0.6rem;
  text-align: left;
}
.md-body th { background: #F8FAFC; }
.md-body em { font-style: italic; }
.md-body strong { font-weight: 600; }

.warning-box {
  background: #FFF8EB;
  border: 1px solid #F5C97B;
  border-left: 4px solid var(--warn);
  padding: 1rem 1.25rem;
  border-radius: 6px;
  margin: 1.25rem 0;
}

button.primary {
  background: var(--tabiya-green);
  color: var(--tabiya-navy);
  border: none;
  padding: 0.6rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background 0.1s ease;
}
button.primary:hover { background: var(--tabiya-green-dark); color: #fff; }
button.primary:focus-visible {
  outline: 2px solid var(--tabiya-navy);
  outline-offset: 2px;
}
button.primary.big { padding: 0.85rem 1.4rem; font-size: 1.05rem; margin-top: 1rem; }

.consent { display: block; margin: 1rem 0; }

.exercise-layout {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(380px, 1fr);
  gap: 1.5rem;
}
.packet, .tasks { min-width: 0; }

/* Sticky packet aside — stays pinned to the viewport while the candidate
 * scrolls the tasks column. The `top` value has to clear the sticky
 * `.topbar` (≈ 60px) or the packet's top edge gets hidden behind it. */
.packet {
  position: sticky;
  top: 80px;
  height: calc(100vh - 100px);
  align-self: start;
  display: flex;
  flex-direction: column;
}
.packet h2 { margin: 0 0 0.35rem; }
.packet-help {
  margin: 0 0 0.6rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.45;
}
.packet-help strong { color: var(--ink); }
.packet-help kbd {
  display: inline-block;
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 0.78rem;
  padding: 0.02rem 0.35rem;
  margin: 0 0.05rem;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 3px;
  background: #F1F5F9;
  color: var(--ink);
  line-height: 1.3;
}

.packet-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  padding: 0.4rem;
  background: #F1F5F9;
  border: 1px solid var(--border);
  border-radius: 6px 6px 0 0;
  border-bottom: none;
}
.packet-tab {
  font: inherit;
  font-size: 0.85rem;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--ink);
  border-radius: 4px;
  cursor: pointer;
  min-width: 2.4rem;
  text-align: center;
  font-weight: 500;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}
.packet-tab--scenario {
  min-width: auto;
  padding: 0.35rem 0.85rem;
}
.packet-tab:hover {
  background: #E2E8F0;
  border-color: #CBD5E1;
}
.packet-tab[aria-selected="true"] {
  background: var(--tabiya-navy);
  color: #fff;
  border-color: var(--tabiya-navy);
  box-shadow: 0 1px 2px rgba(0, 33, 71, 0.25);
}
.packet-tab:focus-visible {
  outline: 2px solid var(--tabiya-navy);
  outline-offset: 2px;
}

.packet-panels {
  flex: 1 1 auto;
  min-height: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0 0 6px 6px;
  overflow: hidden;
}
.packet-panel {
  height: 100%;
  overflow-y: auto;
  padding: 1rem 1.25rem;
}
.packet-panel-title {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  color: var(--tabiya-navy);
}

section.task {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}
.task-title {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  color: var(--tabiya-navy);
}
section.task .instructions { color: var(--muted); margin: 0 0 0.75rem; }
section.task textarea {
  width: 100%;
  font: inherit;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  resize: vertical;
  background: #fff;
}
section.task textarea:focus {
  outline: none;
  border-color: var(--tabiya-navy);
  box-shadow: 0 0 0 3px rgba(0, 33, 71, 0.12);
}
.meta { font-size: 0.8rem; color: var(--muted); margin-top: 0.25rem; }

.footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

table.candidates { width: 100%; border-collapse: collapse; margin-top: 1rem; }
table.candidates th, table.candidates td {
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 0.6rem;
  text-align: left;
  font-size: 0.9rem;
}
table.candidates th {
  background: var(--tabiya-navy);
  color: #fff;
  font-weight: 600;
}
.new-candidate input {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-right: 0.5rem;
}
.new-candidate input:focus {
  outline: none;
  border-color: var(--tabiya-navy);
  box-shadow: 0 0 0 3px rgba(0, 33, 71, 0.12);
}

/* Video step ---------------------------------------------------------- */
.video-step { max-width: 760px; }
.video-step .lede { font-size: 1.05rem; color: var(--ink); }
.video-status {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin: 1rem 0 1.5rem;
  background: var(--card);
}
.video-status--done {
  background: #ECFDF5;
  border-color: #A7F3D0;
  border-left: 4px solid var(--tabiya-green-dark);
}
.video-prompt {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
}
.video-prompt__meta { color: var(--muted); font-size: 0.9rem; }
.video-options {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.5rem 1.25rem;
  margin-bottom: 1.5rem;
}
.video-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}
.video-tab {
  font: inherit;
  padding: 0.5rem 0.9rem;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  color: var(--muted);
  font-weight: 500;
}
.video-tab[aria-selected="true"] {
  color: var(--tabiya-navy);
  border-bottom-color: var(--tabiya-green);
}
.video-tab:focus-visible {
  outline: 2px solid var(--tabiya-navy);
  outline-offset: 2px;
}
.video-panel input[type="url"],
.video-panel input[type="file"] {
  display: block;
  width: 100%;
  max-width: 520px;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font: inherit;
  margin-bottom: 0.75rem;
}
.video-panel input[type="url"]:focus,
.video-panel input[type="file"]:focus {
  outline: none;
  border-color: var(--tabiya-navy);
  box-shadow: 0 0 0 3px rgba(0, 33, 71, 0.12);
}
.video-progress {
  margin-top: 0.75rem;
  max-width: 520px;
}
.video-progress__bar {
  height: 8px;
  background: #E2E8F0;
  border-radius: 4px;
  overflow: hidden;
}
.video-progress__bar > div {
  height: 100%;
  width: 0;
  background: var(--tabiya-green);
  transition: width 0.15s ease;
}
.video-progress__label {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.35rem;
}
.video-error {
  color: var(--critical);
  background: #FEF2F2;
  border: 1px solid #FCA5A5;
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
  margin-top: 0.5rem;
  font-size: 0.9rem;
}
.video-done-hint {
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .exercise-layout { grid-template-columns: 1fr; }
  .packet {
    position: static;
    max-height: none;
  }
  .packet-panels { max-height: 50vh; }
  .packet-panel { max-height: 50vh; }
  .packet-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
  }
  .subtitle { display: none; }
}