/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  font-family: var(--font-button);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  cursor: pointer;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--ripple-x, 50%) var(--ripple-y, 50%), rgba(255,255,255,0.3) 0%, transparent 60%);
  opacity: 0;
  transform: scale(0);
  transition: transform 0.5s, opacity 0.4s;
}

.btn:active::after {
  opacity: 1;
  transform: scale(2.5);
  transition: transform 0s, opacity 0s;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(37, 99, 235, 0.5);
}

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

.btn-secondary:hover {
  border-color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--primary);
  padding: 10px 20px;
}

.btn-ghost:hover {
  background: rgba(37, 99, 235, 0.1);
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--duration-normal) var(--ease-out);
}

.btn:hover svg {
  transform: translateX(3px);
}

/* ===== CARDS ===== */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-glow);
  opacity: 0;
  transition: opacity var(--duration-normal);
  pointer-events: none;
}

.card:hover {
  border-color: rgba(37, 99, 235, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card:hover::before {
  opacity: 1;
}

.card-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
}

.card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  transition: all var(--duration-normal) var(--ease-out);
}

.card-icon svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
  transition: all var(--duration-normal) var(--ease-out);
}

.card:hover .card-icon {
  background: var(--gradient-primary);
  transform: scale(1.1) rotate(5deg);
}

.card:hover .card-icon svg {
  color: #fff;
}

.card-title {
  font-size: var(--fs-h4);
  margin-bottom: var(--space-sm);
}

.card-text {
  color: var(--text-secondary);
  font-size: var(--fs-small);
  line-height: 1.7;
}

/* ===== INPUT ===== */
.form-group {
  position: relative;
  margin-bottom: var(--space-lg);
}

.form-input {
  width: 100%;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-size: var(--fs-body);
  transition: all var(--duration-normal) var(--ease-out);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-label {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: var(--fs-body);
  pointer-events: none;
  transition: all var(--duration-normal) var(--ease-out);
  background: transparent;
  padding: 0 4px;
}

.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  top: 0;
  font-size: var(--fs-xs);
  color: var(--primary);
  background: var(--surface);
}

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

textarea.form-input ~ .form-label {
  top: 20px;
  transform: none;
}

textarea.form-input:focus ~ .form-label,
textarea.form-input:not(:placeholder-shown) ~ .form-label {
  top: -8px;
}

.form-error {
  color: var(--error);
  font-size: var(--fs-xs);
  margin-top: var(--space-xs);
  display: none;
}

.form-group.error .form-input {
  border-color: var(--error);
}

.form-group.error .form-error {
  display: block;
}

/* ===== TOGGLE ===== */
.toggle {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: var(--fs-small);
}

.toggle-switch {
  position: relative;
  width: 52px;
  height: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--duration-normal);
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: all var(--duration-normal) var(--ease-spring);
}

.toggle-switch.active {
  background: var(--primary);
  border-color: var(--primary);
}

.toggle-switch.active::after {
  transform: translateX(24px);
  background: #fff;
}

/* ===== BADGE ===== */
.badge {
  display: inline-flex;
  padding: 4px 12px;
  font-size: var(--fs-xs);
  font-weight: 600;
  font-family: var(--font-button);
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
}

.badge-primary {
  background: rgba(37, 99, 235, 0.15);
  color: var(--primary-light);
}

.badge-accent {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent);
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

/* ===== TOOLTIP ===== */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--surface);
  color: var(--text);
  padding: 6px 12px;
  font-size: var(--fs-xs);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: all var(--duration-fast);
}

[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}