/* Reusable UI Modules: Buttons, Cards, Inputs, States */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1;
  cursor: pointer;
  transition:
    transform var(--transition),
    background-color var(--transition),
    border-color var(--transition),
    box-shadow var(--transition),
    color var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn:focus-visible {
  outline: 2px solid rgba(var(--accent-rgb), 0.42);
  outline-offset: 3px;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.btn.is-loading {
  position: relative;
  pointer-events: none;
  color: transparent;
}

.btn.is-loading::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: btn-spin 0.7s linear infinite;
}

.btn-secondary.is-loading::after,
.btn-ghost.is-loading::after {
  border-color: rgba(255, 255, 255, 0.2);
  border-top-color: var(--text-primary);
}

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

.btn-primary {
  color: #ffffff;
  background:
    linear-gradient(180deg, rgba(var(--accent-rgb), 0.96), rgba(var(--accent-rgb), 0.78));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.14),
    0 16px 34px rgba(var(--accent-rgb), 0.24);
}

.btn-primary:hover:not(:disabled) {
  background:
    linear-gradient(180deg, rgba(var(--accent-rgb), 1), rgba(var(--accent-rgb), 0.86));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    0 18px 40px rgba(var(--accent-rgb), 0.28);
}

.btn-secondary {
  color: var(--text-primary);
  border-color: var(--border-default);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02)),
    rgba(255, 255, 255, 0.02);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--border-strong);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03)),
    rgba(255, 255, 255, 0.03);
}

.btn-ghost {
  color: var(--text-secondary);
  border-color: rgba(var(--accent-rgb), 0.18);
  background: rgba(var(--accent-rgb), 0.06);
}

.btn-ghost:hover:not(:disabled) {
  color: var(--text-primary);
  border-color: rgba(var(--accent-rgb), 0.3);
  background: rgba(var(--accent-rgb), 0.1);
}

/* Cards */
.card {
  position: relative;
  overflow: hidden;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.018)),
    rgba(22, 22, 33, 0.88);
  box-shadow: var(--shadow-soft);
}

.card::after {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(var(--accent-rgb), 0.2), transparent);
  pointer-events: none;
}

/* Inputs & Forms */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.input-group label {
  font-size: 13px;
  color: var(--text-secondary);
}

.input-control {
  width: 100%;
  border: 1px solid var(--border-default);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015)),
    rgba(12, 12, 18, 0.78);
  color: var(--text-primary);
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.6;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    background-color var(--transition);
}

.input-control::placeholder {
  color: var(--text-quaternary);
}

.input-control:focus {
  outline: none;
  border-color: rgba(var(--accent-rgb), 0.4);
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.08);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.018)),
    rgba(12, 12, 18, 0.84);
}

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

/* Drag & Drop Upload Zone */
.upload-zone {
  position: relative;
  border: 1px dashed rgba(var(--accent-rgb), 0.24);
  border-radius: 24px;
  padding: clamp(24px, 3vw, 32px);
  text-align: center;
  background:
    radial-gradient(circle at top, rgba(var(--accent-rgb), 0.08), transparent 60%),
    rgba(255, 255, 255, 0.02);
  transition:
    border-color var(--transition),
    background-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
  cursor: pointer;
}

.upload-zone:hover,
.upload-zone.drag-active {
  border-color: rgba(var(--accent-rgb), 0.42);
  background:
    radial-gradient(circle at top, rgba(var(--accent-rgb), 0.12), transparent 62%),
    rgba(255, 255, 255, 0.03);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transform: translateY(-1px);
}

/* States (Loading, Empty, Error, Success) */
.state-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  text-align: center;
  color: var(--text-secondary);
}

.loader {
  width: 28px;
  height: 28px;
  border: 2px solid rgba(255, 255, 255, 0.14);
  border-top-color: rgba(var(--accent-rgb), 0.92);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border-default);
  background: rgba(255, 255, 255, 0.03);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text-secondary);
}

.badge.success {
  color: var(--state-success);
  border-color: rgba(52, 211, 153, 0.32);
  background: var(--state-success-soft);
}

.badge.warning {
  color: var(--state-warning);
  border-color: rgba(251, 191, 36, 0.32);
  background: var(--state-warning-soft);
}

.badge.error {
  color: var(--state-error);
  border-color: rgba(251, 113, 133, 0.32);
  background: var(--state-error-soft);
}