/* ===================================================
   Federal CSU Workshop Hub — Microsoft Design System
   Segoe UI, #243A5E navy, #0078D4 blue
   =================================================== */

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

:root {
  --navy: #243A5E;
  --navy-dark: #1a2c48;
  --navy-light: #2d4a73;
  --blue: #0078D4;
  --blue-hover: #006CBF;
  --blue-light: #EFF6FC;
  --gray-bg: #F5F5F5;
  --gray-card: #FAFAFA;
  --gray-border: #E0E0E0;
  --gray-text: #666;
  --text: #1A1A1A;
  --text-light: #444;
  --white: #FFFFFF;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.14);
  --transition: 0.18s ease;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  background: var(--gray-bg);
  color: var(--text);
  line-height: 1.5;
}

/* ─── HERO ─────────────────────────────────────────── */
.hero {
  position: relative;
  background: var(--navy);
  color: var(--white);
  padding: 72px 24px 80px;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.hero-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.ms-logo {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.hero-title {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--white);
}

.hero-tagline {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  max-width: 700px;
}

.hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.72);
  max-width: 500px;
}

/* ─── SECTIONS ──────────────────────────────────────── */
.section {
  padding: 72px 24px;
}

.section-demos {
  background: var(--white);
  border-bottom: 1px solid var(--gray-border);
}

.section-workshops {
  background: var(--gray-bg);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 40px;
}

.section-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 8px;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.section-desc {
  font-size: 1rem;
  color: var(--gray-text);
}

/* ─── DEMO CARDS ────────────────────────────────────── */
.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.demo-card {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
}

.demo-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.demo-card.skeleton {
  min-height: 130px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e8e8e8 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-left-color: #ddd;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.demo-agency {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
}

.demo-usecase {
  font-size: 0.9rem;
  color: var(--gray-text);
  margin-bottom: 16px;
  line-height: 1.4;
}

.demo-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--blue);
  text-decoration: none;
  transition: color var(--transition);
}
.demo-link:hover { color: var(--blue-hover); }
.demo-link::after { content: '→'; transition: transform var(--transition); }
.demo-link:hover::after { transform: translateX(3px); }

/* ─── WORKSHOP CARDS ────────────────────────────────── */
.workshop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 24px;
}

.workshop-card {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.workshop-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.workshop-card-soon {
  opacity: 0.72;
}

.workshop-card-header {
  padding: 28px 28px 20px;
  border-bottom: 1px solid var(--gray-border);
  background: linear-gradient(135deg, #F8FAFC 0%, var(--white) 100%);
}

.workshop-badges {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-type {
  background: var(--blue-light);
  color: var(--blue);
  border: 1px solid #C7E0F4;
}

.badge-duration {
  background: #F3F9F0;
  color: #107C10;
  border: 1px solid #C6EFCE;
}

.badge-soon {
  background: #FFF4CE;
  color: #7A4100;
  border: 1px solid #FFD335;
}

.workshop-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.workshop-tools {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tool-tag {
  display: inline-block;
  padding: 3px 10px;
  background: var(--navy);
  color: var(--white);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.tool-tag.muted {
  background: #E8E8E8;
  color: #666;
}

.workshop-card-body {
  padding: 24px 28px;
  flex: 1;
}

.workshop-desc {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 20px;
}

.workshop-deliverables {
  background: var(--gray-bg);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.deliverable-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-text);
  margin-bottom: 10px;
}

.deliverable-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.deliverable-list li {
  font-size: 0.9rem;
  color: var(--text-light);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.check {
  color: #107C10;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.workshop-card-footer {
  padding: 20px 28px 24px;
  border-top: 1px solid var(--gray-border);
}

/* ─── BUTTONS ───────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background: var(--blue);
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.btn-primary:hover {
  background: var(--blue-hover);
  box-shadow: 0 4px 12px rgba(0,120,212,0.35);
  transform: translateY(-1px);
}

.btn-primary:active { transform: translateY(0); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background: transparent;
  color: var(--gray-text);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: not-allowed;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  background: transparent;
  color: var(--gray-text);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-ghost:hover { background: var(--gray-bg); }

/* ─── MODAL ─────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 900;
  align-items: center;
  justify-content: center;
  padding: 24px;
  backdrop-filter: blur(2px);
  animation: fadeIn 0.18s ease;
}

.modal-overlay.open { display: flex; }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.22s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 28px 20px;
  border-bottom: 1px solid var(--gray-border);
  position: sticky;
  top: 0;
  background: var(--white);
  z-index: 1;
}

.modal-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 4px;
}

.modal-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.01em;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.1rem;
  color: var(--gray-text);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background var(--transition);
  flex-shrink: 0;
}
.modal-close:hover { background: var(--gray-bg); }

.modal-body { padding: 24px 28px; }
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-border);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

.optional {
  font-weight: 400;
  color: var(--gray-text);
  font-size: 0.82rem;
}

.form-group input,
.form-group select {
  padding: 9px 12px;
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: auto;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0,120,212,0.15);
}

.form-group input::placeholder { color: #AAAAAA; }

/* ─── CHAT WIDGET ───────────────────────────────────── */
.chat-widget {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 380px;
  height: 520px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 40px rgba(0,0,0,0.18);
  z-index: 950;
  flex-direction: column;
  overflow: hidden;
  animation: chatSlideUp 0.25s ease;
  border: 1px solid var(--gray-border);
}

.chat-widget.open { display: flex; }

@keyframes chatSlideUp {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--navy);
  color: var(--white);
  padding: 14px 16px;
  flex-shrink: 0;
}

.chat-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 600;
}

.copilot-icon-header {
  width: 28px;
  height: 28px;
}

.chat-minimize {
  background: none;
  border: none;
  color: rgba(255,255,255,0.8);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 2px 8px;
  border-radius: 4px;
  line-height: 1;
  transition: color var(--transition);
}
.chat-minimize:hover { color: var(--white); }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #F9F9F9;
}

.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: #DDD; border-radius: 4px; }

.msg {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  max-width: 92%;
}

.msg-bot { align-self: flex-start; }
.msg-user { align-self: flex-end; flex-direction: row-reverse; }

.msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--navy);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.msg-avatar svg { width: 16px; height: 16px; }

.msg-bubble {
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 0.88rem;
  line-height: 1.5;
  word-break: break-word;
  white-space: pre-wrap;
}

.msg-bot .msg-bubble {
  background: #F3F2F1;
  color: var(--text);
  border-bottom-left-radius: 4px;
}

.msg-user .msg-bubble {
  background: var(--blue);
  color: var(--white);
  border-bottom-right-radius: 4px;
}

/* Typing dots */
.typing-dots {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: #F3F2F1;
  border-radius: 16px;
  border-bottom-left-radius: 4px;
  width: fit-content;
}

.typing-dots span {
  width: 7px;
  height: 7px;
  background: #999;
  border-radius: 50%;
  animation: bounce 1.2s ease infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-5px); }
}

/* Repo success */
.repo-success {
  background: #F0FBF0;
  border: 1px solid #C6EFCE;
  border-radius: var(--radius);
  padding: 14px;
}

.repo-success a {
  color: var(--blue);
  font-weight: 600;
  word-break: break-all;
}

.chat-input-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-top: 1px solid var(--gray-border);
  background: var(--white);
  flex-shrink: 0;
}

.chat-input {
  flex: 1;
  padding: 9px 12px;
  border: 1px solid var(--gray-border);
  border-radius: 20px;
  font-family: inherit;
  font-size: 0.88rem;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
}

.chat-input:focus { border-color: var(--blue); }
.chat-input::placeholder { color: #AAA; }

.chat-send {
  width: 36px;
  height: 36px;
  background: var(--blue);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--white);
  flex-shrink: 0;
  transition: background var(--transition);
}

.chat-send:hover { background: var(--blue-hover); }
.chat-send:disabled { background: #CCC; cursor: not-allowed; }

.chat-send svg { width: 15px; height: 15px; }

/* ─── RESPONSIVE ────────────────────────────────────── */
@media (max-width: 680px) {
  .hero-tagline { font-size: 1.7rem; }
  .form-row { grid-template-columns: 1fr; }
  .workshop-grid { grid-template-columns: 1fr; }
  .chat-widget { width: calc(100vw - 24px); right: 12px; bottom: 12px; }
  .modal { margin: 0; border-radius: 0; max-height: 100vh; }
}

@media (max-width: 480px) {
  .hero { padding: 48px 20px 56px; }
  .hero-title { font-size: 1.2rem; }
  .section { padding: 48px 20px; }
}