/* ============================================================
   teacher.css — Teacher Studio styles
   ============================================================ */

.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0 0;
  margin-bottom: 2rem;
}

.nav-back {
  font-size: 13px;
  font-weight: 600;
  color: #ffffff;
  text-decoration: none;
  background: rgba(255,255,255,0.10);
  border: 0.5px solid rgba(255,255,255,0.20);
  border-radius: 999px;
  padding: 5px 14px;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.nav-back:hover {
  background: rgba(255,255,255,0.18);
  color: #ffffff;
}

.nav-logo {
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,0.50);
}

.nav-mode {
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 999px;
}

.teacher-mode {
  background: rgba(245,160,122,0.15);
  color: #f5a07a;
  border: 0.5px solid rgba(245,160,122,0.35);
}

.nav-provider {
  font-size: 11px;
  color: rgba(255,255,255,0.30);
  background: rgba(255,255,255,0.06);
  border: 0.5px solid rgba(255,255,255,0.10);
  border-radius: 999px;
  padding: 3px 10px;
}

.page-header {
  text-align: center;
  padding: 0 1rem 2rem;
}

.page-header h1 {
  font-size: 36px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.page-header h1 span { color: #f5a07a; }

.page-tagline {
  font-size: 14px;
  color: rgba(255,255,255,0.50);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.6;
}

.header-divider {
  height: 1px;
  background: linear-gradient(to right,
    transparent, rgba(255,255,255,0.08), transparent);
  margin: 0 0 2rem;
}

/* ── Layout ───────────────────────────────────────────────── */
.studio-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 16px;
  align-items: start;
}

.studio-left { display: flex; flex-direction: column; gap: 12px; }

.studio-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 1.1rem 1.25rem;
  backdrop-filter: blur(12px);
}

.studio-card-title {
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,0.50);
  margin-bottom: 0.85rem;
  letter-spacing: 0.04em;
}

/* ── Tool list ────────────────────────────────────────────── */
.tool-list { display: flex; flex-direction: column; gap: 8px; }

.tool-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  cursor: pointer;
  transition: all 0.18s ease;
}

.tool-item:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(245,160,122,0.25);
}

.tool-item.selected {
  background: rgba(245,160,122,0.10);
  border-color: rgba(245,160,122,0.38);
}

.tool-icon  { font-size: 18px; flex-shrink: 0; }
.tool-title {
  font-size: 13px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 2px;
}
.tool-desc  { font-size: 11px; color: rgba(255,255,255,0.40); }

/* ── Form ─────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 0.85rem;
}

.form-group label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: rgba(255,255,255,0.40);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  font-size: 13px;
  padding: 0.6rem 0.9rem;
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  color: #ffffff;
  outline: none;
  transition: border-color 0.18s ease;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: #f5a07a;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.22);
}

.form-group select option { background: #1a1928; color: #ffffff; }

.form-group textarea {
  resize: vertical;
  line-height: 1.6;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.hidden { display: none; }

/* ── Studio button ────────────────────────────────────────── */
.studio-btn {
  width: 100%;
  font-size: 14px;
  font-weight: 600;
  padding: 0.85rem;
  border-radius: 12px;
  border: none;
  background: #993C1D;
  color: #fff;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.18s ease, opacity 0.18s ease;
}

.studio-btn:hover:not(:disabled) {
  background: #712B13;
  transform: translateY(-1px);
}

.studio-btn:disabled { opacity: 0.40; cursor: not-allowed; }

/* ── Right panel ──────────────────────────────────────────── */
.studio-right {
  display: flex;
  flex-direction: column;
}

.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.output-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.30);
}

.copy-btn {
  font-size: 12px;
  font-weight: 500;
  color: #f5a07a;
  background: rgba(245,160,122,0.10);
  border: 0.5px solid rgba(245,160,122,0.30);
  border-radius: 999px;
  padding: 3px 12px;
  cursor: pointer;
  transition: all 0.18s ease;
}

.copy-btn:hover   { background: rgba(245,160,122,0.18); }
.copy-btn.hidden  { display: none; }

.output-feed {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  min-height: 560px;
  max-height: 740px;
  overflow-y: auto;
  padding: 1.5rem;
  scroll-behavior: smooth;
  backdrop-filter: blur(12px);
}

.output-feed::-webkit-scrollbar       { width: 4px; }
.output-feed::-webkit-scrollbar-track { background: transparent; }
.output-feed::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.10);
  border-radius: 99px;
}

.output-empty {
  text-align: center;
  color: rgba(255,255,255,0.18);
  font-size: 14px;
  padding: 5rem 2rem;
  line-height: 2;
}

/* ── Output blocks ────────────────────────────────────────── */
.output-block {
  margin-bottom: 1.5rem;
  animation: fadeSlideIn 0.22s ease both;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.output-block-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  padding: 0 2px;
  color: #f5a07a;
}

.output-text {
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  line-height: 1.75;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 12px;
  padding: 1rem 1.1rem;
}

.output-text p            { margin-bottom: 0.5rem; }
.output-text p:last-child { margin-bottom: 0; }

.output-typing {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.30);
  font-size: 13px;
  padding: 1rem 0;
}

.output-typing-dots { display: flex; gap: 4px; }

.output-typing-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #f5a07a;
  animation: typingBounce 1.3s infinite ease-in-out;
}

.output-typing-dots span:nth-child(2) { animation-delay: 0.18s; }
.output-typing-dots span:nth-child(3) { animation-delay: 0.36s; }

@keyframes typingBounce {
  0%, 80%, 100% { transform: translateY(0);    opacity: 0.35; }
  40%           { transform: translateY(-4px); opacity: 1;    }
}

/* ── Week cards for lecture planner ──────────────────────── */
.week-card {
  background: rgba(245,160,122,0.06);
  border: 1px solid rgba(245,160,122,0.18);
  border-radius: 12px;
  padding: 0.9rem 1.1rem;
  margin-bottom: 0.75rem;
}

.week-label {
  font-size: 11px;
  font-weight: 700;
  color: #f5a07a;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.week-content {
  font-size: 13px;
  color: rgba(255,255,255,0.80);
  line-height: 1.65;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 800px) {
  .studio-layout { grid-template-columns: 1fr; }
  .output-feed   { min-height: 400px; }
}

@media (max-width: 500px) {
  .form-row       { grid-template-columns: 1fr; }
  .page-header h1 { font-size: 26px; }
}

.clear-btn {
  font-size: 12px;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: 999px;
  border: 0.5px solid rgba(245,160,122,0.25);
  background: transparent;
  color: #f5a07a;
  cursor: pointer;
  transition: all 0.18s ease;
  margin-left: auto;
}

.clear-btn:hover {
  background: rgba(245,160,122,0.10);
  border-color: rgba(245,160,122,0.45);
}