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

:root {
  --bg-dark: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a25;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --primary-glow: rgba(99, 102, 241, 0.4);
  --danger: #ef4444;
  --danger-hover: #f87171;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #1e293b;
  --gradient-1: #6366f1;
  --gradient-2: #8b5cf6;
  --gradient-3: #ec4899;
}

body {
  font-family:
    'Inter',
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    Roboto,
    sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bg-gradient {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--primary-glow), transparent),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(236, 72, 153, 0.15), transparent);
  pointer-events: none;
  z-index: 0;
}

.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(10, 10, 15, 0.7);
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
}

.logo-icon {
  font-size: 24px;
}

.logo-text {
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn-logout {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 12px;
  color: var(--danger);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-logout:hover {
  background: var(--danger);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(239, 68, 68, 0.3);
}

.btn-logout svg {
  transition: transform 0.3s ease;
}

.btn-logout:hover svg {
  transform: translateX(4px);
}

.main {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 140px 24px 60px;
}

.hero {
  text-align: center;
  margin-bottom: 50px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-hover);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2), var(--gradient-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 32px;
  margin-bottom: 24px;
  transition: all 0.3s ease;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-header {
  margin-bottom: 24px;
}

.card-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.card-description {
  color: var(--text-secondary);
  font-size: 14px;
}

.data-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.input-group textarea {
  width: 100%;
  padding: 16px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  resize: vertical;
  transition: all 0.3s ease;
}

.input-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
}

.input-group textarea::placeholder {
  color: var(--text-muted);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 32px;
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  border: none;
  border-radius: 14px;
  color: white;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  align-self: flex-start;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px var(--primary-glow);
}

.btn-primary svg {
  transition: transform 0.3s ease;
}

.btn-primary:hover svg {
  transform: translate(4px, -4px);
}

.data-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.data-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all 0.2s ease;
}

.data-item:hover {
  border-color: rgba(99, 102, 241, 0.3);
  background: rgba(0, 0, 0, 0.3);
}

.data-item-content {
  font-size: 15px;
  color: var(--text-primary);
}

.data-item-time {
  font-size: 12px;
  color: var(--text-muted);
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 40px;
  font-size: 14px;
}

.message {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 16px 24px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  z-index: 200;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.message.error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger-hover);
}

.message.success {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #4ade80;
}

.message.info {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--primary-hover);
}

.register-link {
  text-align: center;
  margin-top: 15px;
}

.register-link a {
  color: var(--primary-hover);
  text-decoration: none;
  font-weight: 600;
}

.register-link a:hover {
  text-decoration: underline;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 600;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

.error-message {
  display: none;
  color: var(--danger);
  font-size: 13px;
  margin-top: 6px;
}

.form-error {
  text-align: center;
  margin-bottom: 15px;
}

form.success .form-error {
  color: #4ade80;
}

button {
  background: #007bff;
  color: white;
  padding: 12px 24px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
}

button:hover {
  background: #0056b3;
}

.section {
  display: none;
  margin-top: 30px;
}

#loginSection {
  display: block;
}

h2 {
  margin-top: 0;
}

ul {
  padding-left: 20px;
}

.hidden {
  display: none !important;
}

.container {
  width: 100%;
  max-width: 450px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
}

.container h1 {
  text-align: center;
  margin-bottom: 32px;
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.container h2 {
  margin-bottom: 24px;
  color: var(--text-primary);
}

.container .form-group input {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.container .form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
}

.container .form-group input::placeholder {
  color: var(--text-muted);
}

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

.password-input-wrapper input {
  padding-right: 48px;
}

.toggle-password {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toggle-password:hover {
  color: var(--text-secondary);
  background: none;
}

.toggle-password svg {
  transition: all 0.2s ease;
}

.container button[type='submit'] {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  border: none;
  border-radius: 12px;
  color: white;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
}

.container button[type='submit']:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px var(--primary-glow);
}

.container .register-link {
  margin-top: 24px;
  color: var(--text-secondary);
}

.link-btn {
  background: none;
  border: none;
  color: #007bff;
  cursor: pointer;
  font-size: inherit;
  text-decoration: underline;
  padding: 0;
}

.link-btn:hover {
  background: none;
  color: #0056b3;
}

@media (max-width: 640px) {
  .header {
    padding: 16px 20px;
  }

  .logo-text {
    display: none;
  }

  .main {
    padding: 100px 16px 40px;
  }

  .hero-title {
    font-size: 32px;
  }

  .card {
    padding: 24px;
    border-radius: 16px;
  }

  .btn-primary {
    width: 100%;
  }
}

.data-item-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.btn-delete {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 8px;
  color: var(--danger);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-delete:hover {
  background: var(--danger);
  color: white;
}