/* ==========================================
   Buttons
   ========================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    min-height: 3.2rem;
    padding: 0 var(--space-lg);
    border: 1px solid red;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1;
    cursor: pointer;
    user-select: none;
    text-decoration: none;
    transition: background-color var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
    box-shadow: var(--shadow-sm);
}

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

    .btn:active:not(:disabled) {
        transform: translateY(0);
        box-shadow: var(--shadow-sm);
    }

    .btn:disabled {
        opacity: 0.65;
        cursor: not-allowed;
        box-shadow: none;
        transform: none;
    }

/* ===== Sizes ===== */

.btn-sm {
    min-height: 2.6rem;
    padding: 0 var(--space-md);
    font-size: 0.9rem;
}

.btn-lg {
    min-height: 4rem;
    padding: 0 var(--space-xl);
    font-size: 1.1rem;
}

/* ===== Primary ===== */

.btn-primary {
    background-color: var(--color-button-primary);
    color: white;
}

    .btn-primary:hover:not(:disabled) {
        background-color: var(--color-button-primary-hover);
    }

/* ===== Secondary ===== */

.btn-secondary {
    background-color: var(--color-button-secondary);
    color: white;
}

    .btn-secondary:hover:not(:disabled) {
        background-color: var(--color-button-secondary-hover);
    }

/* ===== Accent ===== */

.btn-accent {
    background-color: var(--color-button-accent);
    color: white;
}

    .btn-accent:hover:not(:disabled) {
        background-color: var(--color-button-accent-hover);
    }

/* ===== Outline ===== */

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

    .btn-outline:hover:not(:disabled) {
        background-color: var(--color-background-light);
    }

/* ===== Danger ===== */

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

    .btn-danger:hover:not(:disabled) {
        filter: brightness(0.9);
    }

/* ===== Full Width ===== */

.btn-block {
    width: 100%;
}