:root {
  --color-bg: #f5f5f5;
  --color-surface: #ffffff;
  --color-primary: #4f46e5;
  --color-primary-hover: #4338ca;
  --color-text: #111827;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
}

header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 24px;
}

header h1 { font-size: 1.25rem; font-weight: 700; color: var(--color-primary); }

.container { max-width: 960px; margin: 0 auto; padding: 32px 16px; }

/* Список экспертов */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.expert-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  cursor: pointer;
  transition: box-shadow .15s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.expert-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,.15); }

.expert-card img {
  width: 64px; height: 64px;
  border-radius: 50%; object-fit: cover;
  margin-bottom: 12px;
}

.expert-card h2 { font-size: 1rem; font-weight: 600; }
.expert-card p { font-size: .875rem; color: var(--color-muted); margin-top: 4px; }

/* Страница бронирования */
.book-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: start;
}

@media (max-width: 700px) { .book-layout { grid-template-columns: 1fr; } }

.expert-profile { background: var(--color-surface); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.expert-profile img { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; margin-bottom: 12px; }
.expert-profile h1 { font-size: 1.25rem; }
.expert-profile .title { color: var(--color-muted); font-size: .875rem; margin-top: 4px; }
.expert-profile .bio { margin-top: 12px; font-size: .9rem; line-height: 1.5; }

.calendar-section { background: var(--color-surface); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.calendar-section h2 { font-size: 1rem; font-weight: 600; margin-bottom: 16px; }

.slots-list { display: flex; flex-direction: column; gap: 8px; }

.slot-btn {
  padding: 10px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: white;
  cursor: pointer;
  font-size: .9rem;
  text-align: left;
  transition: all .15s;
}

.slot-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.slot-btn.selected { background: var(--color-primary); color: white; border-color: var(--color-primary); }

/* Форма */
.form-section { margin-top: 24px; }
.form-section h2 { font-size: 1rem; font-weight: 600; margin-bottom: 16px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: .875rem; font-weight: 500; margin-bottom: 6px; }
.form-group input {
  width: 100%; padding: 10px 14px;
  border: 1px solid var(--color-border); border-radius: 8px;
  font-size: .9rem; outline: none;
}
.form-group input:focus { border-color: var(--color-primary); }

.btn-primary {
  width: 100%; padding: 12px;
  background: var(--color-primary); color: white;
  border: none; border-radius: 8px;
  font-size: 1rem; font-weight: 600;
  cursor: pointer; transition: background .15s;
}
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.success-msg {
  text-align: center; padding: 32px;
  background: #ecfdf5; border-radius: var(--radius);
  color: #065f46;
}
.success-msg h2 { font-size: 1.25rem; margin-bottom: 8px; }