:root {
  --bg: #0f172a;
  --bg-soft: #1e293b;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --accent: #10b981;
  --danger: #ef4444;
  --border: #e2e8f0;
  --shadow: 0 10px 30px rgba(2, 6, 23, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 220px, #eef2f7 220px, #eef2f7 100%);
  min-height: 100vh;
}

/* Header */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  color: #fff;
  flex-wrap: wrap;
  gap: 12px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.logo {
  font-size: 40px;
  line-height: 1;
}
.topbar h1 {
  margin: 0;
  font-size: 22px;
}
.subtitle {
  margin: 2px 0 0;
  font-size: 13px;
  color: #cbd5e1;
}
.school {
  font-size: 13px;
  color: #cbd5e1;
  background: rgba(255, 255, 255, 0.08);
  padding: 6px 12px;
  border-radius: 999px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.user-box {
  display: flex;
  align-items: center;
  gap: 8px;
}
.user-name {
  font-size: 13px;
  color: #e2e8f0;
  font-weight: 600;
}
.btn-logout {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
}
.btn-logout:hover {
  background: rgba(255, 255, 255, 0.22);
}

/* Overlay login */
.login-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
}
.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 32px 28px;
  width: 100%;
  max-width: 360px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: center;
}
.login-logo {
  font-size: 44px;
  line-height: 1;
}
.login-card h2 {
  margin: 4px 0 0;
  font-size: 20px;
}
.login-sub {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 13px;
}
.login-card input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
}
.login-card input:focus {
  outline: 2px solid var(--primary);
  border-color: transparent;
}
.login-btn {
  width: 100%;
  margin-top: 4px;
}
.login-error {
  margin: 0;
  color: var(--danger);
  font-size: 13px;
}

/* Config warning */
.config-warning {
  max-width: 960px;
  margin: 0 auto 8px;
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
}
.config-warning code {
  background: rgba(0, 0, 0, 0.08);
  padding: 1px 6px;
  border-radius: 4px;
}

/* Layout */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 8px 20px 40px;
  display: grid;
  gap: 20px;
}

.card {
  background: var(--card);
  border-radius: 16px;
  padding: 22px 24px;
  box-shadow: var(--shadow);
}
.card h2 {
  margin: 0 0 4px;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}
.hint {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 13px;
}

/* Controls */
.controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.btn {
  border: none;
  border-radius: 10px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.2s ease, opacity 0.2s ease;
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
}
.btn-ghost {
  background: #f1f5f9;
  color: var(--text);
}
.btn-ghost:hover {
  background: #e2e8f0;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.lang-label {
  font-size: 14px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
select {
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
}

.audio-preview {
  width: 100%;
  margin-top: 14px;
}
.file-name {
  font-size: 13px;
  color: var(--muted);
  margin: 8px 0 0;
}

textarea {
  width: 100%;
  min-height: 160px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  font-size: 14px;
  line-height: 1.6;
  resize: vertical;
  font-family: inherit;
}
textarea:focus {
  outline: 2px solid var(--primary);
  border-color: transparent;
}

/* Ringkasan */
.summary {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  background: #f8fafc;
  font-size: 14px;
  line-height: 1.7;
  white-space: pre-wrap;
  color: var(--text);
  min-height: 60px;
}
.summary-empty {
  color: var(--muted);
  font-style: italic;
}

/* Mindmap */
.mindmap-wrap {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: #f8fafc;
}
.mindmap {
  width: 100%;
  height: 460px;
  display: block;
}

/* Status toast */
.status {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg);
  color: #fff;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 50;
}
.status.error {
  background: var(--danger);
}
.status.success {
  background: var(--accent);
}
.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  padding: 16px;
}

.hidden {
  display: none !important;
}

@media (max-width: 560px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }
}