/* ===== static/style.css ===== */
/* Школа Пифагора — общие стили для всех страниц */

/* ---------- ПЕРЕМЕННЫЕ (СВЕТЛАЯ ТЕМА) ---------- */
:root {
  --body-bg: #f5f7fc;
  --gradient-start: rgba(235, 245, 255, 0.7);
  --gradient-end: rgba(220, 240, 255, 0.5);
  --panel-bg: rgba(255, 255, 255, 0.85);
  --panel-border: rgba(255, 255, 255, 0.5);
  --text-primary: #1e1f2a;
  --text-secondary: #4b587c;
  --heading-color: #0b1e32;
  --accent-color: #3b82f6;
  --accent-light: rgba(59, 130, 246, 0.15);
  --accent-focus: rgba(59, 130, 246, 0.2);
  --input-bg: #ffffff;
  --input-border: #e2e8f0;
  --input-focus-shadow: rgba(59, 130, 246, 0.15);
  --card-bg: rgba(255, 255, 255, 0.7);
  --card-border: rgba(255, 255, 255, 0.8);
  --badge-bg: #eef2ff;
  --badge-text: #2563eb;
  --meta-color: #64748b;
  --error-bg: rgba(255, 235, 235, 0.5);
  --error-text: #bc3f3f;
  --footer-color: #8a99b4;
  --avatar-bg-start: #eef2ff;
  --avatar-bg-end: #dfe8f5;
  --avatar-text: #3b82f6;
  --drop-hint-color: #64748b;
  --vk-icon: #6b7c9e;
  --shadow: 0 20px 40px -8px rgba(18, 35, 60, 0.12);
  --input-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
  --toggle-bg: #ffffff;
  --toggle-border: #e2e8f0;
  --vk-button-bg: #0077ff;
  --vk-button-hover: #0066dd;
  --vk-button-text: white;
  --admin-badge-bg: rgba(220, 38, 38, 0.12);
  --admin-badge-text: #b91c1c;
  --admin-badge-border: rgba(220, 38, 38, 0.4);
  --course-item-bg: rgba(255, 255, 255, 0.5);
  --course-item-hover: rgba(255, 255, 255, 0.8);
  --purchased-color: #0d7c3f;
  --not-purchased-color: #9aa6b9;
  --spinner-border: rgba(59, 130, 246, 0.2);
}

/* ---------- ТЁМНАЯ ТЕМА ---------- */
body.dark {
  --body-bg: #0f141e;
  --gradient-start: rgba(15, 25, 40, 0.95);
  --gradient-end: rgba(10, 18, 30, 0.9);
  --panel-bg: rgba(22, 32, 48, 0.95);
  --panel-border: rgba(55, 75, 100, 0.4);
  --text-primary: #eef2fb;
  --text-secondary: #a0b8d4;
  --heading-color: #f0f4ff;
  --accent-color: #5b9aff;
  --accent-light: rgba(91, 154, 255, 0.2);
  --accent-focus: rgba(91, 154, 255, 0.25);
  --input-bg: #1a2536;
  --input-border: #334153;
  --input-focus-shadow: rgba(91, 154, 255, 0.2);
  --card-bg: rgba(30, 42, 60, 0.9);
  --card-border: rgba(70, 95, 125, 0.3);
  --badge-bg: #253650;
  --badge-text: #8bb4ff;
  --meta-color: #95a9c9;
  --error-bg: rgba(80, 30, 30, 0.7);
  --error-text: #ff8a8a;
  --footer-color: #8da0bc;
  --avatar-bg-start: #2a3e5a;
  --avatar-bg-end: #1e2e45;
  --avatar-text: #8bb4ff;
  --drop-hint-color: #95a9c9;
  --vk-icon: #95a9c9;
  --shadow: 0 20px 40px -8px rgba(0, 0, 0, 0.6);
  --input-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  --toggle-bg: #1e2a3a;
  --toggle-border: #3a4a5e;
  --vk-button-bg: #2d7aff;
  --vk-button-hover: #1e68e0;
  --admin-badge-bg: rgba(185, 28, 28, 0.15);
  --admin-badge-text: #ffb3b3;
  --admin-badge-border: rgba(255, 100, 100, 0.35);
  --course-item-bg: rgba(40, 55, 75, 0.6);
  --course-item-hover: rgba(50, 70, 95, 0.8);
  --purchased-color: #3acf7a;
  --not-purchased-color: #7d92af;
  --spinner-border: rgba(91, 154, 255, 0.2);
}

/* ===== ЛОКАЛЬНЫЙ ШРИФТ INTER ===== */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/static/fonts/Inter-Regular.woff2') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/static/fonts/Inter-Medium.woff2') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/static/fonts/Inter-SemiBold.woff2') format('woff2');
}

/* Далее все стили как прежде... */

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--body-bg);
  background-image: radial-gradient(circle at 10% 20%, var(--gradient-start) 0%, transparent 30%),
                    radial-gradient(circle at 90% 70%, var(--gradient-end) 0%, transparent 40%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  color: var(--text-primary);
  transition: background 0.2s, color 0.2s;
}

/* ---------- ОСНОВНАЯ ПАНЕЛЬ ---------- */
.panel {
  max-width: 720px;
  min-width: 416px;
  width: 100%;
  background: var(--panel-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 36px;
  box-shadow: var(--shadow);
  padding: 2.5rem 2rem 2.5rem;
  border: 1px solid var(--panel-border);
  transition: background 0.2s, border 0.2s, box-shadow 0.2s;
  position: relative;
}

/* Для страниц с более узким контентом (логин) */
.panel-narrow {
  max-width: 460px;
}

/* ---------- ПЕРЕКЛЮЧАТЕЛЬ ТЕМЫ ---------- */
.theme-toggle {
  position: absolute;
  top: 24px;
  right: 28px;
  display: flex;
  gap: 6px;
  background: var(--toggle-bg);
  padding: 4px;
  border-radius: 40px;
  border: 1px solid var(--toggle-border);
  backdrop-filter: blur(4px);
  z-index: 10;
}

.theme-btn {
  background: transparent;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.15s;
}

.theme-btn:hover {
  background: var(--accent-light);
  color: var(--accent-color);
}

.theme-btn.active {
  background: var(--accent-color);
  color: white;
}

/* ---------- ЗАГОЛОВКИ ---------- */
h1 {
  font-weight: 550;
  font-size: 2rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
  color: var(--heading-color);
  display: flex;
  align-items: center;
  gap: 10px;
  padding-right: 110px; /* место под переключатель */
}

.subhead {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  border-left: 3px solid var(--accent-color);
  padding-left: 16px;
}

/* ---------- ФОРМЫ (логин) ---------- */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.input-group label {
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text-secondary);
  margin-left: 8px;
}

.input-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon i {
  position: absolute;
  left: 18px;
  color: var(--meta-color);
  font-size: 1rem;
  pointer-events: none;
}

.input-icon input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  font-size: 1rem;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: 30px;
  color: var(--text-primary);
  box-shadow: var(--input-shadow);
  transition: all 0.2s;
}

.input-icon input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 6px 16px var(--accent-light), 0 0 0 4px var(--accent-light);
}

.input-icon input::placeholder {
  color: var(--meta-color);
  opacity: 0.6;
  font-weight: 400;
}

.submit-btn {
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 14px 20px;
  border-radius: 40px;
  font-size: 1rem;
  font-weight: 550;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 8px 16px -6px var(--accent-light);
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 0.5rem;
}

.submit-btn:hover {
  filter: brightness(1.1);
  transform: scale(1.01);
  box-shadow: 0 12px 20px -8px var(--accent-color);
}

.divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.8rem;
  margin: 1.5rem 0 0.5rem;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--input-border);
}

.divider span {
  margin: 0 12px;
  opacity: 0.7;
}

.vk-login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--vk-button-bg);
  color: var(--vk-button-text);
  text-decoration: none;
  padding: 14px 20px;
  border-radius: 40px;
  font-size: 1.1rem;
  font-weight: 550;
  transition: all 0.2s;
  box-shadow: 0 8px 16px -6px rgba(0, 119, 255, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 0.5rem;
}

.vk-login-btn i {
  font-size: 1.3rem;
}

.vk-login-btn:hover {
  background: var(--vk-button-hover);
  transform: translateY(-2px);
  box-shadow: 0 14px 22px -10px var(--vk-button-bg);
}

.extra-links {
  display: flex;
  justify-content: space-between;
  margin-top: 1.8rem;
  font-size: 0.85rem;
}

.extra-links a {
  color: var(--accent-color);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.15s;
}

.extra-links a:hover {
  opacity: 1;
  text-decoration: underline;
}

.error-message {
  background: var(--error-bg);
  color: var(--error-text);
  padding: 10px 16px;
  border-radius: 30px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  display: none;
}

/* ---------- ПРОФИЛЬ ---------- */
.profile-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  padding-right: 100px;
}

.avatar-large {
  width: 80px;
  height: 80px;
  background: linear-gradient(145deg, var(--avatar-bg-start), var(--avatar-bg-end));
  border-radius: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: 500;
  color: var(--avatar-text);
  border: 2px solid var(--accent-color);
  flex-shrink: 0;
}

.user-title {
  flex: 1;
}

.user-name {
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--heading-color);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.user-email {
  color: var(--text-secondary);
  margin-top: 4px;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 40px;
  background: var(--badge-bg);
  color: var(--badge-text);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.badge.admin {
  background: var(--admin-badge-bg);
  color: var(--admin-badge-text);
  border: 1.5px solid var(--admin-badge-border);
}

.admin-action {
  margin-bottom: 2rem;
}

.admin-panel-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent-color);
  color: white;
  text-decoration: none;
  padding: 12px 24px;
  border-radius: 40px;
  font-weight: 550;
  box-shadow: 0 8px 16px -6px var(--accent-light);
  transition: all 0.2s;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.admin-panel-btn i {
  font-size: 1.2rem;
}

.admin-panel-btn:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 14px 22px -10px var(--accent-color);
}

.courses-section {
  margin-top: 0.5rem;
}

.section-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
  gap: 8px;
}

.section-title h2 {
  font-size: 1.4rem;
  font-weight: 550;
  color: var(--heading-color);
  letter-spacing: -0.01em;
}

.course-count {
  color: var(--meta-color);
  font-size: 0.9rem;
  background: var(--card-bg);
  padding: 4px 12px;
  border-radius: 40px;
}

.courses-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.course-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--course-item-bg);
  backdrop-filter: blur(4px);
  padding: 14px 20px;
  border-radius: 24px;
  border: 1px solid var(--card-border);
  transition: all 0.15s;
  text-decoration: none;
  color: inherit;
}

.course-item:hover {
  background: var(--course-item-hover);
  transform: translateX(4px);
}

.course-icon {
  width: 44px;
  height: 44px;
  background: var(--badge-bg);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-color);
  font-size: 1.3rem;
}

.course-info {
  flex: 1;
}

.course-title {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--heading-color);
}

.course-meta {
  font-size: 0.8rem;
  color: var(--meta-color);
  margin-top: 2px;
}

.course-status {
  color: var(--accent-color);
  font-size: 0.8rem;
  font-weight: 500;
  background: var(--accent-light);
  padding: 4px 10px;
  border-radius: 40px;
}

.empty-courses {
  text-align: center;
  padding: 2rem;
  color: var(--meta-color);
  background: var(--card-bg);
  border-radius: 26px;
  backdrop-filter: blur(4px);
}

.logout-link {
  margin-top: 2.5rem;
  text-align: right;
}

.logout-link a {
  color: var(--meta-color);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.15s;
}

.logout-link a:hover {
  color: var(--accent-color);
}

/* ---------- АДМИН-ПАНЕЛЬ (проверка курсов) ---------- */
.selector-block {
  margin-bottom: 2.2rem;
}

.label-icon {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.course-select {
  width: 100%;
  padding: 14px 18px;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: 24px;
  font-size: 1rem;
  font-weight: 450;
  color: var(--text-primary);
  appearance: none;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="%236b7c9e" stroke-width="2"><polyline points="6 9 12 15 18 9"/></svg>');
  background-repeat: no-repeat;
  background-position: right 18px center;
  background-size: 18px;
  box-shadow: var(--input-shadow);
  cursor: pointer;
  transition: all 0.2s;
}

.course-select:hover {
  border-color: var(--accent-color);
}

.course-select:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 4px var(--accent-light);
}

.input-zone {
  margin-bottom: 28px;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.vk-icon {
  position: absolute;
  left: 18px;
  color: var(--vk-icon);
  font-size: 1.2rem;
  pointer-events: none;
}

#vkLinkInput {
  width: 100%;
  padding: 16px 20px 16px 52px;
  font-size: 1rem;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: 30px;
  color: var(--text-primary);
  box-shadow: var(--input-shadow);
  transition: all 0.2s;
}

#vkLinkInput:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 6px 16px var(--accent-light), 0 0 0 4px var(--accent-light);
}

.drop-hint {
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--drop-hint-color);
  display: flex;
  align-items: center;
  gap: 6px;
  padding-left: 8px;
}

.result-area {
  margin-top: 8px;
  min-height: 80px;
}

.result-card {
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border-radius: 26px;
  padding: 1.4rem 1.8rem;
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.avatar-placeholder {
  width: 48px;
  height: 48px;
  background: linear-gradient(145deg, var(--avatar-bg-start), var(--avatar-bg-end));
  border-radius: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--avatar-text);
  font-weight: 500;
  font-size: 1.2rem;
}

.user-detail .vk-link {
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--heading-color);
}

.user-detail .course-badge {
  font-size: 0.8rem;
  background: var(--badge-bg);
  padding: 3px 12px;
  border-radius: 40px;
  color: var(--badge-text);
  display: inline-block;
  margin-top: 4px;
}

.purchase-status {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.status-badge {
  font-size: 1.4rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.purchased {
  color: var(--purchased-color);
}

.not-purchased {
  color: var(--not-purchased-color);
}

.status-meta {
  font-size: 0.75rem;
  color: var(--meta-color);
  margin-top: 4px;
}

.loading-state,
.error-state,
.empty-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-secondary);
  background: var(--card-bg);
  border-radius: 26px;
  backdrop-filter: blur(4px);
}

.error-state {
  color: var(--error-text);
  background: var(--error-bg);
}

.spinner {
  display: inline-block;
  width: 22px;
  height: 22px;
  border: 2.5px solid var(--spinner-border);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 8px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------- ПОДВАЛ ---------- */
.panel-footer {
  margin-top: 22px;
  font-size: 0.75rem;
  color: var(--footer-color);
  text-align: right;
}

/* ---------- АДАПТИВНОСТЬ ---------- */
@media (max-width: 600px) {
  body {
    padding: auto 0.8rem;
    /* align-items: flex-start; */
  }

  .panel {
    padding: 1.8rem 1.2rem;
    border-radius: 28px;
  }

  h1 {
    font-size: 1.7rem;
    padding-right: 100px;
  }

  .theme-toggle {
    top: 16px;
    right: 16px;
  }

  .profile-header {
    padding-right: 90px;
    gap: 1rem;
  }

  .avatar-large {
    width: 60px;
    height: 60px;
    font-size: 2rem;
  }

  .user-name {
    font-size: 1.4rem;
  }

  .admin-panel-btn {
    width: 100%;
    justify-content: center;
  }

  .result-card {
    /* flex-direction: column; */
    align-items: flex-start;
  }

  .purchase-status {
    align-items: flex-start;
  }

  .extra-links {
    flex-direction: column;
    gap: 8px;
    align-items: center;
  }
}

@media (max-width: 420px) {
  h1 {
    font-size: 1.5rem;
    padding-right: 90px;
  }

  .theme-btn {
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }

  .profile-header {
    flex-direction: column;
    align-items: flex-start;
    padding-right: 0;
  }

  .user-name {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

/* Стили для формы регистрации */
.register-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.register-form .input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}