.btn {
  display: inline-block;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  color: var(--text-primary);
  background-image: linear-gradient(145deg, var(--accent), var(--accent-dark));
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
  color: var(--accent);
  background-color: transparent;
  border: 1px solid var(--accent);
}

.btn-secondary:hover {
  background-color: rgba(59, 130, 246, 0.1);
  border-color: var(--accent);
}

.btn-large {
  padding: 18px 36px;
  font-size: 1.1rem;
}

.card {
  padding: 32px;
  text-align: left;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 0 25px rgba(59, 130, 246, 0.15), 0 8px 32px rgba(0, 0, 0, 0.2);
}

.card:hover .card-icon {
  transform: scale(1.1);
}

.card-icon {
  display: inline-block;
  padding: 12px;
  margin-bottom: 24px;
  color: var(--accent);
  background-color: rgba(59, 130, 246, 0.1);
  border-radius: 12px;
  transition: transform 0.3s ease;
}

.card-icon .feather {
  width: 28px;
  height: 28px;
}

.card-title {
  font-family: var(--font-mono);
  font-weight: 700;
  margin-bottom: 12px;
}

.card-text {
  font-size: 0.95rem;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  margin-bottom: 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
}

/* --- FORM STYLES (MOVED FOR GLOBAL USE) --- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-sans);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-control::placeholder {
  color: #666;
}

/* --- CHECKBOX STYLES (MOVED FOR GLOBAL USE) --- */
.form-group-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
}

.form-group-checkbox label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-bottom: 0;
  cursor: pointer;
}

.form-group-checkbox input[type="checkbox"] {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  cursor: pointer;
  position: relative;
  transition: background-color 0.2s, border-color 0.2s;
}

.form-group-checkbox input[type="checkbox"]:checked {
  background-color: var(--accent);
  border-color: var(--accent);
}

.form-group-checkbox input[type="checkbox"]:checked::after {
  content: '✔';
  position: absolute;
  color: white;
  font-size: 12px;
  font-weight: bold;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.form-group-checkbox a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.form-group-checkbox a:hover {
  text-decoration: underline;
}


/* --- NOTIFICATION STYLES --- */
.notification-container {
  position: fixed;
  top: var(--notification-top-offset, 24px);
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 350px;
  max-width: calc(100% - 48px);
}

.notification-toast {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background-color: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-left-width: 4px;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.notification-toast.show {
  opacity: 1;
  transform: translateX(0);
}

.toast-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
}

.toast-message {
  flex-grow: 1;
  margin: 0;
  padding: 0;
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.5;
}

.toast-close-btn {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 0;
  margin-left: auto;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.toast-close-btn:hover {
  opacity: 1;
}

.toast-close-btn .feather {
  width: 18px;
  height: 18px;
}

.toast--success {
  border-left-color: var(--green-light);
}

.toast--success .toast-icon {
  color: var(--green-light);
}

.toast--error {
  border-left-color: var(--red-light);
}

.toast--error .toast-icon {
  color: var(--red-light);
}

.toast--info {
  border-left-color: var(--accent);
}

.toast--info .toast-icon {
  color: var(--accent);
}

/* Frontend validation helpers (aligned with backend schemas) */
.field-error {
  color: var(--red-light);
  display: block;
  margin-top: 6px;
  font-size: 0.875rem;
}

.input-invalid {
  border-color: var(--red-light) !important;
  outline-color: var(--red-light);
  box-shadow: 0 0 0 2px rgba(220, 53, 69, 0.15);
}

.input-invalid:focus {
  border-color: var(--red-light) !important;
  outline: none;
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.25);
}