:root {
  --blue: #3498db;
  --blue-dark: #1f6fb2;
  --text: #0f172a;
  --muted: #64748b;
  --light: #f8fbff;
  --border: #e2e8f0;
  --dark: #020617;
  --success: #16a34a;
  --warning: #f59e0b;
  --error: #dc2626;
  --primary: var(--blue) !important;
  --secondary: var(--dark) !important;
  --accent1: var(--blue) !important;
  --accent2: var(--blue-dark) !important;
  --accent3: var(--blue) !important;
  --gradient: linear-gradient(135deg, #ffffff 0%, #f7fbff 100%) !important;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0 !important;
  padding: 0 !important;
  color: var(--text) !important;
  background:
    radial-gradient(circle at top left, rgba(52, 152, 219, 0.16), transparent 34%),
    #ffffff !important;
  font-family: Inter, Arial, sans-serif !important;
  line-height: 1.5 !important;
  overflow-x: hidden;
}

a {
  color: inherit;
}

.container {
  width: min(1180px, calc(100% - 40px)) !important;
  max-width: 1180px !important;
  margin: 0 auto !important;
  padding: 0 !important;
}

header {
  position: sticky !important;
  top: 0 !important;
  z-index: 100 !important;
  background: rgba(255, 255, 255, 0.9) !important;
  color: var(--text) !important;
  border-bottom: 1px solid rgba(226, 232, 240, 0.86) !important;
  box-shadow: none !important;
  backdrop-filter: blur(18px);
  padding: 0 !important;
}

.header-content {
  min-height: 88px;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 24px !important;
}

.logo {
  display: inline-flex !important;
  align-items: center !important;
  gap: 12px !important;
  color: var(--text) !important;
  font-size: 26px !important;
  font-weight: 900 !important;
  letter-spacing: 0.14em !important;
  text-decoration: none !important;
}

.logo-icon {
  width: 52px !important;
  height: 52px !important;
  margin: 0 !important;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: transparent !important;
  font-size: 0 !important;
  position: relative;
  flex: 0 0 auto;
  box-shadow: 0 16px 30px rgba(52, 152, 219, 0.22);
}

.logo-icon::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 11px;
  width: 29px;
  height: 29px;
  background: #ffffff;
  clip-path: polygon(0 62%, 100% 0, 62% 100%, 47% 58%);
}

nav ul {
  display: flex !important;
  align-items: center !important;
  gap: 8px 22px !important;
  flex-wrap: wrap;
  margin: 0 !important;
  padding: 0 !important;
  list-style: none !important;
}

nav ul li {
  margin: 0 !important;
}

nav a,
nav button {
  color: #475569 !important;
  background: transparent !important;
  border: 0 !important;
  border-radius: 999px !important;
  padding: 10px 12px !important;
  font: inherit !important;
  font-size: 15px !important;
  font-weight: 800 !important;
  text-decoration: none !important;
  cursor: pointer;
  transition: 0.2s ease;
}

nav a:hover,
nav button:hover {
  color: var(--blue) !important;
  background: #eff8ff !important;
}

.hero,
.login-section,
.dashboard-section,
.logout-section,
.password-section,
.reset-section,
.success-section,
.confirm-section,
.lesson-section,
.message-section,
.schedule-section,
.form-section {
  position: relative;
  min-height: calc(100vh - 88px) !important;
  display: flex !important;
  align-items: center !important;
  color: var(--text) !important;
  background:
    radial-gradient(circle at top left, rgba(52, 152, 219, 0.19), transparent 35%),
    linear-gradient(180deg, #ffffff 0%, #f7fbff 100%) !important;
  padding: 74px 0 92px !important;
  overflow: hidden;
}

.molecule,
.bubble {
  display: none !important;
}

.login-container,
.dashboard-container,
.form-container,
.logout-container,
.password-container,
.reset-container,
.success-container,
.confirm-container,
.lesson-container,
.message-container,
.schedule-container,
.welcome-card,
.confirmation-box {
  position: relative !important;
  z-index: 1 !important;
  width: 100% !important;
  max-width: 860px !important;
  margin: 0 auto !important;
  padding: 40px !important;
  color: var(--text) !important;
  text-align: left !important;
  background: rgba(255, 255, 255, 0.96) !important;
  border: 1px solid var(--border) !important;
  border-radius: 34px !important;
  box-shadow: 0 30px 70px rgba(52, 152, 219, 0.14) !important;
  backdrop-filter: none !important;
}

.dashboard-container,
.lesson-container,
.schedule-container {
  max-width: 1180px !important;
}

.login-header,
.welcome-header,
.logout-header,
.password-header,
.reset-header,
.success-header,
.message-header {
  text-align: left !important;
  margin-bottom: 28px !important;
}

.login-header h1,
.welcome-header h1,
.form-title,
.logout-header h1,
.password-header h1,
.reset-header h1,
.success-header h1,
.confirm-title,
.lesson-title,
.message-header h1,
.section-title {
  margin: 0 0 14px !important;
  color: var(--text) !important;
  font-size: clamp(32px, 5vw, 52px) !important;
  line-height: 1.08 !important;
  letter-spacing: -0.04em !important;
  font-weight: 950 !important;
}

.login-header p,
.welcome-message,
.logout-header p,
.password-header p,
.reset-header p,
.success-header p,
.message-header p,
.info-text,
.form-help,
.file-description,
.lesson-meta,
.lesson-time,
.lesson-date,
.no-lessons,
.no-homework,
.no-files {
  color: var(--muted) !important;
  opacity: 1 !important;
}

.welcome-icon,
.logout-icon,
.success-icon,
.message-icon,
.warning-icon,
.lesson-icon,
.action-icon,
.service-icon,
.contact-icon,
.file-icon {
  width: 58px !important;
  height: 58px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin: 0 0 24px !important;
  border-radius: 20px !important;
  background: #eff8ff !important;
  color: var(--blue) !important;
  font-size: 26px !important;
}

.form-group {
  margin-bottom: 20px !important;
}

.form-group label,
.info-label,
.file-title,
.lesson-subject,
.lesson-student {
  display: block !important;
  margin-bottom: 8px !important;
  color: var(--text) !important;
  font-weight: 850 !important;
}

input,
select,
textarea,
.form-control {
  width: 100% !important;
  min-height: 52px;
  border: 1px solid var(--border) !important;
  border-radius: 18px !important;
  padding: 14px 16px !important;
  background: #ffffff !important;
  color: var(--text) !important;
  font: inherit !important;
  font-size: 16px !important;
  outline: none !important;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

input[type="checkbox"] {
  width: 18px !important;
  min-height: 18px !important;
  height: 18px !important;
  padding: 0 !important;
  accent-color: var(--blue);
}

input:focus,
select:focus,
textarea:focus,
.form-control:focus {
  border-color: var(--blue) !important;
  box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.12) !important;
}

.btn,
.button,
.login-btn,
.logout-btn,
.profile-btn,
.btn-admin,
.btn-small,
.btn-download,
.btn-delete,
.modal-btn,
button[type="submit"] {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 10px !important;
  width: auto !important;
  min-height: 48px;
  border: 0 !important;
  border-radius: 999px !important;
  padding: 13px 22px !important;
  background: var(--blue) !important;
  color: #ffffff !important;
  font: inherit !important;
  font-weight: 900 !important;
  text-decoration: none !important;
  cursor: pointer !important;
  box-shadow: 0 16px 30px rgba(52, 152, 219, 0.25) !important;
  transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}

.btn:hover,
.button:hover,
.login-btn:hover,
.logout-btn:hover,
.profile-btn:hover,
button[type="submit"]:hover {
  transform: translateY(-2px) !important;
  background: var(--blue-dark) !important;
  box-shadow: 0 20px 36px rgba(52, 152, 219, 0.32) !important;
}

.btn-secondary,
.btn-warning,
.btn-logout {
  background: #ffffff !important;
  color: var(--text) !important;
  border: 1px solid var(--border) !important;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.06) !important;
}

.btn-danger,
.btn-delete {
  background: var(--error) !important;
  box-shadow: 0 16px 30px rgba(220, 38, 38, 0.2) !important;
}

.btn-group,
.lesson-actions,
.admin-actions,
.quick-actions,
.file-actions {
  display: flex !important;
  flex-wrap: wrap !important;
  gap: 12px !important;
  justify-content: flex-start !important;
  margin-top: 28px !important;
}

.messages,
.alert,
.warning-message,
.instructions,
.security-tips,
.requirements,
.supported-formats,
.consequences,
.homework-section,
.files-section,
.lesson-link-card,
.user-info,
.info-card,
.balance-card,
.action-card,
.service-card,
.review-card,
.lesson-card,
.file-card,
.contact-form,
.contact-info {
  color: var(--text) !important;
  background: #f8fafc !important;
  border: 1px solid var(--border) !important;
  border-radius: 24px !important;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.04) !important;
}

.alert {
  display: block;
  padding: 14px 16px !important;
  margin: 0 0 16px !important;
  text-align: left !important;
}

.alert-success {
  border-color: rgba(22, 163, 74, 0.32) !important;
  background: rgba(22, 163, 74, 0.08) !important;
}

.alert-error,
.error {
  color: var(--error) !important;
}

.alert-error {
  border-color: rgba(220, 38, 38, 0.28) !important;
  background: rgba(220, 38, 38, 0.08) !important;
}

.info-grid,
.services-grid,
.files-grid,
.quick-actions,
.balance-list {
  display: grid !important;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)) !important;
  gap: 18px !important;
}

.info-item {
  display: flex !important;
  justify-content: space-between !important;
  gap: 20px !important;
  padding: 14px 0 !important;
  border-bottom: 1px solid var(--border) !important;
  color: var(--text) !important;
}

.info-item:last-child {
  border-bottom: 0 !important;
}

.info-value,
.username {
  color: var(--blue) !important;
  font-weight: 900 !important;
}

.lesson-tabs {
  display: flex !important;
  gap: 10px !important;
  padding: 6px !important;
  margin: 28px 0 !important;
  border-radius: 999px !important;
  background: #eff8ff !important;
}

.lesson-tab {
  flex: 1 1 auto;
  border-radius: 999px !important;
  padding: 12px 18px !important;
  color: var(--muted) !important;
  background: transparent !important;
  text-align: center;
  font-weight: 900;
}

.lesson-tab.active,
.active {
  background: #ffffff !important;
  color: var(--blue) !important;
  box-shadow: 0 10px 24px rgba(52, 152, 219, 0.12);
}

.status-badge,
.status-pending,
.status-completed {
  display: inline-flex !important;
  align-items: center !important;
  border-radius: 999px !important;
  padding: 7px 12px !important;
  font-size: 13px !important;
  font-weight: 900 !important;
}

.status-completed {
  color: var(--success) !important;
  background: rgba(22, 163, 74, 0.1) !important;
}

.status-pending {
  color: var(--blue-dark) !important;
  background: #eff8ff !important;
}

footer {
  background: #ffffff !important;
  color: var(--muted) !important;
  border-top: 1px solid var(--border) !important;
  padding: 30px 0 !important;
}

.footer-content {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 24px !important;
  flex-direction: row !important;
}

.social-links {
  display: flex;
  gap: 10px;
  margin: 0 !important;
}

.social-links a {
  width: 42px !important;
  height: 42px !important;
  margin: 0 !important;
  border-radius: 50% !important;
  background: #eff8ff !important;
  color: var(--blue) !important;
  text-decoration: none !important;
}

.copyright {
  margin: 0 !important;
  color: var(--muted) !important;
}

@media (max-width: 768px) {
  .container {
    width: min(100% - 28px, 1180px) !important;
  }

  .header-content,
  .footer-content {
    min-height: auto;
    padding: 16px 0;
    flex-direction: column !important;
    align-items: flex-start !important;
    text-align: left !important;
  }

  nav ul {
    width: 100%;
    gap: 6px !important;
  }

  nav a,
  nav button {
    padding: 9px 10px !important;
    font-size: 14px !important;
  }

  .login-container,
  .dashboard-container,
  .form-container,
  .logout-container,
  .password-container,
  .reset-container,
  .success-container,
  .confirm-container,
  .lesson-container,
  .message-container,
  .schedule-container {
    padding: 24px !important;
    border-radius: 28px !important;
  }

  .hero,
  .login-section,
  .dashboard-section,
  .logout-section,
  .password-section,
  .reset-section,
  .success-section,
  .confirm-section,
  .lesson-section,
  .message-section,
  .schedule-section,
  .form-section {
    padding: 52px 0 68px !important;
  }

  .btn-group,
  .lesson-actions,
  .admin-actions,
  .quick-actions,
  .file-actions {
    flex-direction: column !important;
  }

  .btn,
  .button,
  .login-btn,
  .logout-btn,
  .profile-btn,
  .btn-admin,
  .btn-small,
  .btn-download,
  .btn-delete,
  button[type="submit"] {
    width: 100% !important;
  }
}