/* ============================================
   REUSABLE COMPONENTS
   ============================================ */

/* --- Buttons --- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1.5;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-dark));
    color: var(--color-white);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--color-secondary-light), var(--color-secondary));
}

.btn-outline {
    background: transparent;
    border-color: var(--color-dark-300);
    color: var(--color-dark-600);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(43, 108, 176, 0.05);
}

.btn-ghost {
    background: transparent;
    color: var(--color-dark-600);
    border: none;
}

.btn-ghost:hover {
    background: var(--color-dark-100);
    color: var(--color-dark);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
}

.btn-block {
    display: flex;
    width: 100%;
}

/* --- Inputs --- */

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-dark-700);
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-dark);
    background: var(--color-white);
    border: 2px solid var(--color-dark-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.15);
}

.form-input::placeholder {
    color: var(--color-dark-400);
}

.form-input.error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.15);
}

.form-input-icon {
    position: relative;
}

.form-input-icon .form-input {
    padding-left: var(--space-12);
}

.form-input-icon .icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-dark-400);
    font-size: var(--font-size-lg);
    pointer-events: none;
}

.form-input-icon .toggle-password {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-dark-400);
    cursor: pointer;
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    padding: var(--space-1);
    pointer-events: auto;
    transition: color var(--transition-fast);
}

.form-input-icon .toggle-password:hover {
    color: var(--color-primary);
}

.form-error {
    display: none;
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-error);
}

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

/* --- Cards --- */

.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--space-6);
    transition: box-shadow var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

/* --- Alerts --- */

.alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    animation: alertSlideIn 0.3s ease;
}

@keyframes alertSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-error {
    background: rgba(229, 62, 62, 0.1);
    color: var(--color-error);
    border: 1px solid rgba(229, 62, 62, 0.2);
}

.alert-success {
    background: rgba(56, 161, 105, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(56, 161, 105, 0.2);
}

.alert-warning {
    background: rgba(214, 158, 46, 0.1);
    color: var(--color-accent-dark);
    border: 1px solid rgba(214, 158, 46, 0.2);
}

.alert-info {
    background: rgba(49, 130, 206, 0.1);
    color: var(--color-info);
    border: 1px solid rgba(49, 130, 206, 0.2);
}

/* --- Badge --- */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background: rgba(43, 108, 176, 0.1);
    color: var(--color-primary);
}

.badge-success {
    background: rgba(56, 161, 105, 0.1);
    color: var(--color-success);
}

.badge-warning {
    background: rgba(214, 158, 46, 0.1);
    color: var(--color-accent-dark);
}

.badge-error {
    background: rgba(229, 62, 62, 0.1);
    color: var(--color-error);
}

/* --- Spinner --- */

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.spinner-dark {
    border-color: rgba(26, 32, 44, 0.1);
    border-top-color: var(--color-primary);
}