/* ============================================================
   Directions Asia 2026 — Workshop Site Styles
   ============================================================ */

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

:root {
  --ms-blue:        #0078D4;
  --ms-blue-dark:   #005A9E;
  --ms-blue-light:  #C7E0F4;
  --ms-blue-bg:     #EFF6FC;
  --ms-purple:      #8764B8;
  --ms-green:       #107C10;
  --ms-orange:      #D83B01;
  --ms-yellow:      #FFB900;

  --bg:             #FAF9F8;
  --surface:        #FFFFFF;
  --surface-alt:    #F3F2F1;
  --border:         #E1DFDD;
  --text-primary:   #201F1E;
  --text-secondary: #605E5C;
  --text-muted:     #A19F9D;

  --sidebar-width:  272px;
  --topbar-height:  52px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 3px 10px rgba(0,0,0,0.12);

  --radius:    4px;
  --radius-lg: 8px;

  --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Cascadia Code', 'Consolas', 'Courier New', monospace;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.65;
  font-size: 15px;
}

/* ===== TOPBAR ===== */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-height);
  background: var(--ms-blue);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  gap: 1rem;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: white;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  white-space: nowrap;
}

.topbar-brand:hover { color: rgba(255,255,255,0.85); }

.topbar-event {
  margin-left: auto;
  color: rgba(255,255,255,0.65);
  font-size: 0.83rem;
  white-space: nowrap;
}

/* ===== PAGE LAYOUT ===== */
.page-wrapper {
  display: flex;
  padding-top: var(--topbar-height);
  min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--surface);
  border-right: 1px solid var(--border);
  position: fixed;
  top: var(--topbar-height);
  bottom: 0;
  overflow-y: auto;
  padding: 1.25rem 0 2rem;
  z-index: 90;
}

.sidebar-section { margin-bottom: 0.5rem; }

.sidebar-heading {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-muted);
  padding: 0.75rem 1.25rem 0.35rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.5rem 1.25rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  border-left: 3px solid transparent;
  transition: background 0.12s, color 0.12s;
  line-height: 1.35;
}

.sidebar-link:hover {
  background: var(--surface-alt);
  color: var(--text-primary);
  text-decoration: none;
}

.sidebar-link.active {
  background: var(--ms-blue-bg);
  color: var(--ms-blue);
  border-left-color: var(--ms-blue);
  font-weight: 600;
}

.sidebar-link.active .sidebar-stage-num {
  background: var(--ms-blue);
  color: white;
}

.sidebar-icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  opacity: 0.7;
}

.sidebar-stage-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--surface-alt);
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
  color: var(--text-secondary);
}

/* ===== MAIN CONTENT ===== */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 2.5rem 3.5rem 4rem;
  max-width: calc(var(--sidebar-width) + 840px);
  min-width: 0;
}

/* ===== PAGE HEADER (stages) ===== */
.page-header {
  margin-bottom: 1.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.stage-badge {
  display: inline-block;
  background: var(--ms-blue-bg);
  color: var(--ms-blue-dark);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  margin-bottom: 0.65rem;
}

.page-header h1 {
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.page-header .lead {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ===== PROGRESS BAR ===== */
.progress-bar {
  display: flex;
  gap: 3px;
  margin-bottom: 2.25rem;
  height: 6px;
}

.progress-step {
  flex: 1;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  position: relative;
}

.progress-step.done    { background: var(--ms-blue); }
.progress-step.current { background: var(--ms-blue); opacity: 0.6; }

/* ===== CONTENT BODY ===== */
.content-body h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border);
}

.content-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.content-body p { margin-bottom: 1rem; }

.content-body ul,
.content-body ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.content-body li { margin-bottom: 0.35rem; }

.content-body a { color: var(--ms-blue); }
.content-body a:hover { text-decoration: underline; }

.content-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ===== CODE ===== */
.content-body code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--surface-alt);
  color: var(--ms-purple);
  padding: 0.15em 0.4em;
  border-radius: var(--radius);
}

.content-body pre,
.task-card pre {
  background: #1E1E1E;
  color: #D4D4D4;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  line-height: 1.55;
}

.content-body pre code,
.task-card pre code {
  background: transparent;
  color: inherit;
  padding: 0;
  font-size: 0.85rem;
}

/* ===== CALLOUTS ===== */
.callout {
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-lg);
  border-left: 4px solid;
  margin-bottom: 1.25rem;
}
.callout-title {
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.3rem;
}
.callout-info    { background: var(--ms-blue-bg);  border-color: var(--ms-blue);   color: #003966; }
.callout-tip     { background: #F1FAF1;             border-color: var(--ms-green);  color: #054B16; }
.callout-warning { background: #FFF4CE;             border-color: var(--ms-yellow); color: #7D4E00; }
.callout-danger  { background: #FEF0EC;             border-color: var(--ms-orange); color: #6B1A00; }

/* ===== TASK CARD ===== */
.task-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.task-card-header {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  margin-bottom: 0.75rem;
}

.task-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--ms-blue);
  color: white;
  font-weight: 700;
  font-size: 0.82rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.task-card-header h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
  border: none;
  padding: 0;
}

/* ===== STAGE NAV ===== */
.stage-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--ms-blue);
  color: white;
  border-color: var(--ms-blue);
}
.btn-primary:hover {
  background: var(--ms-blue-dark);
  border-color: var(--ms-blue-dark);
  text-decoration: none;
  color: white;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-secondary:hover {
  background: var(--surface-alt);
  text-decoration: none;
  color: var(--text-primary);
}

.btn-complete {
  background: var(--surface-alt);
  color: var(--text-secondary);
  border-color: var(--border);
  cursor: default;
}

/* ===== HERO (index page) ===== */
.hero {
  text-align: center;
  padding: 3.5rem 2rem;
  background: linear-gradient(135deg, var(--ms-blue-bg) 0%, #F0EBFA 100%);
  border-radius: var(--radius-lg);
  margin-bottom: 2.5rem;
  border: 1px solid #D9EDF9;
}

.hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 2rem;
}

/* ===== STAGES GRID (index page) ===== */
.stages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stage-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
}

.stage-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--ms-blue);
  text-decoration: none;
  color: inherit;
}

.stage-card-num {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ms-blue);
  margin-bottom: 0.4rem;
}

.stage-card h3 {
  font-size: 0.975rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
  border: none;
  padding: 0;
}

.stage-card p {
  font-size: 0.83rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.45;
}

/* ===== INDEX CONTENT ===== */
.main-content h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { margin-left: 0; padding: 1.5rem; }
  .topbar-event { display: none; }
}