:root {
  --bg-color: var(--tg-theme-bg-color, #0f172a);
  --text-color: var(--tg-theme-text-color, #f8fafc);
  --hint-color: var(--tg-theme-hint-color, #94a3b8);
  --link-color: var(--tg-theme-link-color, #3b82f6);
  --button-color: var(--tg-theme-button-color, #3b82f6);
  --button-text-color: var(--tg-theme-button-text-color, #ffffff);
  --secondary-bg-color: var(--tg-theme-secondary-bg-color, #1e293b);

  /* Custom */
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  --accent-gradient: linear-gradient(135deg, #6366f1, #a855f7, #ec4899);
  --success-color: #22c55e;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

body::before, body::after {
  content: '';
  position: fixed;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  filter: blur(100px);
  z-index: -1;
  opacity: 0.5;
}
body::before {
  top: -100px;
  left: -100px;
  background: rgba(99, 102, 241, 0.4);
}
body::after {
  bottom: -100px;
  right: -100px;
  background: rgba(236, 72, 153, 0.4);
}

.app-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 100vh;
  position: relative;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 16px;
  box-shadow: var(--glass-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.glass-card:active {
  transform: scale(0.98);
}

.header {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}
.header h1 {
  font-size: 24px;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header p {
  color: var(--hint-color);
  font-size: 14px;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  padding-left: 24px;
  margin-bottom: 80px;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--glass-border) 10%, var(--glass-border) 90%, transparent);
}

.timeline-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -22px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--button-color);
  box-shadow: 0 0 10px var(--button-color);
}
.timeline-item.past::before {
  background: var(--hint-color);
  box-shadow: none;
}
.timeline-item.empty::before {
  background: transparent;
  border: 2px solid var(--glass-border);
  box-shadow: none;
}

.pair-time {
  font-size: 13px;
  font-weight: 600;
  color: var(--hint-color);
  display: flex;
  align-items: center;
  gap: 6px;
}
.pair-time .badge {
  background: var(--glass-border);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
}

.teacher-card {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  animation: slideUp 0.4s ease backwards;
  margin-bottom: 8px;
}
.teacher-avatar {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--secondary-bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  border: 1px solid var(--glass-border);
  overflow: hidden;
}
.teacher-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.teacher-info {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.teacher-name {
  font-weight: 600;
  font-size: 15px;
}
.teacher-subject {
  font-size: 13px;
  color: var(--hint-color);
}
.room-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-color);
  background: rgba(255, 255, 255, 0.1);
  padding: 4px 10px;
  border-radius: 12px;
  flex-shrink: 0;
}

/* ===== PROFILE VIEW ===== */
.profile-view {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg-color);
  z-index: 100;
  overflow: hidden;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.profile-view.active { transform: translateX(0); }

.profile-blob {
  position: absolute;
  top: 0; left: 0; right: 0; height: 220px;
  background: var(--accent-gradient);
  opacity: 0.12;
  filter: blur(40px);
  z-index: 0;
  pointer-events: none;
}

/* Единственный скролл-контейнер */
.pv-scroll {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  z-index: 1;
  scrollbar-width: none;  /* Firefox */
}
.pv-scroll::-webkit-scrollbar { display: none; } /* Chrome/Safari */

/* Hero: большое фото по центру */
.pv-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 8px 16px 16px;
}
.pv-hero-avatar {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 20px;
  background: var(--secondary-bg-color);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  overflow: hidden;
}
.pv-hero-avatar img {
  width: 100%; height: 100%;
  object-fit: cover;
}

/* Sticky bar: прилипает вверху при скролле */
.pv-sticky {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg-color);
  border-bottom: 1px solid var(--glass-border);
}
.pv-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  height: 0;
  overflow: hidden;
}
.pv-bar-back {
  background: none;
  border: none;
  color: var(--link-color);
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.pv-bar-avatar {
  width: 36px; height: 36px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--secondary-bg-color);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  opacity: 0;
  transform: scale(0.5);
  transition: none; /* JS управляет */
}
.pv-bar-avatar img { width: 100%; height: 100%; object-fit: cover; }
.pv-bar-name {
  font-weight: 600;
  font-size: 16px;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0;
  transition: none;
}

/* Контент вкладок, min-height гарантирует скролл */
.pv-tabs-content {
  padding: 16px 16px 80px;
  min-height: 120vh;
}

.back-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--link-color);
  font-weight: 500;
  cursor: pointer;
  background: none;
  border: none;
  font-size: 16px;
  padding: 8px;
  flex-shrink: 0;
  margin-bottom: 8px;
}

.profile-name {
  font-size: 22px;
  font-weight: 700;
  padding: 0 8px;
}
.profile-source {
  font-size: 12px;
  color: var(--hint-color);
  margin-bottom: 4px;
}

/* Шапка (липкая) профиля */
.profile-sticky-header {
  flex-shrink: 0;
  padding: 0;
  background: var(--bg-color);
  position: sticky;
  top: 0;
  z-index: 10;
}

.tabs-header {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 16px 8px;
  scrollbar-width: none;
  flex-shrink: 0;
}
.tabs-header::-webkit-scrollbar { display: none; }
.tabs-header::-webkit-scrollbar { display: none; }
.tab-btn {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--hint-color);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s ease;
}
.tab-btn.active {
  background: var(--button-color);
  color: var(--button-text-color);
  border-color: var(--button-color);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}
.tab-content {
  display: none;
  padding: 0 16px 80px;
}
.tab-content.active {
  display: block;
}

.trait-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.1);
  padding: 6px 12px;
  border-radius: 12px;
  font-size: 13px;
  margin: 0 8px 8px 0;
  border: 1px solid var(--glass-border);
}

.debt-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--glass-border);
}
.debt-item:last-child {
  border-bottom: none;
}
.debt-title {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 4px;
}
.debt-type {
  font-size: 13px;
  color: var(--hint-color);
}
.status-badge {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 12px;
  font-weight: 600;
}
.status-todo { background: rgba(245, 158, 11, 0.2); color: var(--warning-color); }
.status-active { background: rgba(59, 130, 246, 0.2); color: var(--button-color); }
.status-done { background: rgba(34, 197, 94, 0.2); color: var(--success-color); }

.task-item {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 12px;
}
.task-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}
.task-deadline {
  color: var(--danger-color);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.cal-day {
  margin-bottom: 16px;
}
.cal-day-title {
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--link-color);
}
.cal-pair {
  display: flex;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.03);
  padding: 8px 12px;
  border-radius: 8px;
  margin-bottom: 4px;
  font-size: 13px;
}

.empty-state {
  text-align: center;
  color: var(--hint-color);
  padding: 32px 0;
  font-size: 14px;
}

/* Forms UI */
.form-modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 200;
  display: flex;
  align-items: flex-end;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.form-modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
.form-modal {
  background: var(--bg-color);
  width: 100%;
  border-radius: 24px 24px 0 0;
  padding: 24px;
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  max-height: 90vh;
  overflow-y: auto;
  border-top: 1px solid var(--glass-border);
}
.form-modal-overlay.active .form-modal {
  transform: translateY(0);
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--hint-color);
  margin-bottom: 6px;
}
.form-input {
  width: 100%;
  background: var(--secondary-bg-color);
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}
.form-input:focus {
  border-color: var(--button-color);
}
.form-btn {
  width: 100%;
  background: var(--button-color);
  color: var(--button-text-color);
  border: none;
  padding: 14px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  margin-top: 8px;
}
.form-btn.secondary {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  margin-top: 12px;
}

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

/* Floating FAB */
.fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: var(--accent-gradient);
  border-radius: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5);
  cursor: pointer;
  z-index: 50;
  border: none;
}
.fab:active {
  transform: scale(0.95);
}